<?xml version="1.0" encoding="UTF-8" ?>
<?xml-stylesheet type="text/xsl" href="https://devzone.nordicsemi.com/cfs-file/__key/system/syndication/rss.xsl" media="screen"?><rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:slash="http://purl.org/rss/1.0/modules/slash/" xmlns:wfw="http://wellformedweb.org/CommentAPI/" xmlns:atom="http://www.w3.org/2005/Atom"><channel><title>Buttonless DFU update failed</title><link>https://devzone.nordicsemi.com/f/nordic-q-a/60764/buttonless-dfu-update-failed</link><description>Hi, 
 When I do a secure DFU (screen dumps pasted ), it failed with error code 0x8005. It worked on WIndows 7 PC. 
 //==================Linux System Report 
 # nRFConnect System Report - 2020-04-27T21-48-24.040Z 
 - System: Dell Inc. Precision 7520 -</description><dc:language>en-US</dc:language><generator>Telligent Community 13</generator><lastBuildDate>Mon, 04 May 2020 09:34:14 GMT</lastBuildDate><atom:link rel="self" type="application/rss+xml" href="https://devzone.nordicsemi.com/f/nordic-q-a/60764/buttonless-dfu-update-failed" /><item><title>RE: Buttonless DFU update failed</title><link>https://devzone.nordicsemi.com/thread/247803?ContentTypeID=1</link><pubDate>Mon, 04 May 2020 09:34:14 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:71bef37c-c613-4fde-82b4-0901fa42f17b</guid><dc:creator>Einar Thorsrud</dc:creator><description>&lt;p&gt;Hi David,&lt;/p&gt;
&lt;p&gt;The error code&amp;nbsp;0x8005 is NRF_ERROR_SD_RPC_NO_RESPONSE, and the error code&amp;nbsp;0x802a is&amp;nbsp;NRF_ERROR_SD_RPC_H5_TRANSPORT_NO_RESPONSE. We sometimes see this (and other communication issues) when using the USB-UART passthrough of the onboard Segger debugger chip. Based on experience, this is usually fixed by disabling the mass storage feature of the onboard debugger, as suggested &lt;a href="https://devzone.nordicsemi.com/support-private/support/245173#permalink=539087"&gt;here&lt;/a&gt;. You can do this using the &amp;quot;MSDDisable&amp;quot; command in&amp;nbsp;JLink Commander. See &lt;a href="https://docs.zephyrproject.org/1.12.0/tools/nordic_segger.html#disabling-the-mass-storage-device-functionality"&gt;this&lt;/a&gt; for details.&lt;/p&gt;
&lt;p&gt;Einar&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: Buttonless DFU update failed</title><link>https://devzone.nordicsemi.com/thread/247429?ContentTypeID=1</link><pubDate>Thu, 30 Apr 2020 00:48:21 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:2853e4f8-217c-4a91-8cd1-2a6dfec68f75</guid><dc:creator>TigerD</dc:creator><description>&lt;p&gt;Einar,&lt;/p&gt;
&lt;p&gt;It worked on Android Phone. I pasted log messages:&lt;/p&gt;
&lt;p&gt;//======================================================&lt;/p&gt;
&lt;p&gt;- Device Name [R W] (0x2A00)&lt;br /&gt;- Appearance [R] (0x2A01)&lt;br /&gt;- Peripheral Preferred Connection Parameters [R] (0x2A04)&lt;br /&gt;- Central Address Resolution [R] (0x2AA6)&lt;br /&gt;Generic Attribute (0x1801)&lt;br /&gt;- Service Changed [I] (0x2A05)&lt;br /&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;Client Characteristic Configuration (0x2902)&lt;br /&gt;Secure DFU Service (0xFE59)&lt;br /&gt;- Buttonless DFU [I W] (8ec90003-f315-4f60-9fb8-838830daea50)&lt;br /&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;Client Characteristic Configuration (0x2902)&lt;br /&gt;D 18:25:52.578 gatt.setCharacteristicNotification(00002a05-0000-1000-8000-00805f9b34fb, true)&lt;br /&gt;I 18:25:52.625 Connection parameters updated (interval: 48.75ms, latency: 0, timeout: 5000ms)&lt;br /&gt;I 18:25:57.172 Connection parameters updated (interval: 198.75ms, latency: 0, timeout: 4000ms)&lt;br /&gt;V 18:28:27.131 [DFU] DFU service started&lt;br /&gt;V 18:28:27.131 [DFU] Opening file...&lt;br /&gt;I 18:28:27.165 [DFU] Firmware file opened successfully&lt;br /&gt;V 18:28:27.165 [DFU] Connecting to DFU target...&lt;br /&gt;D 18:28:27.167 [DFU] gatt = device.connectGatt(autoConnect = false)&lt;br /&gt;I 18:28:27.171 [DFU] Connected to CA:CB:86:2A:F2:6D&lt;br /&gt;V 18:28:27.172 [DFU] Discovering services...&lt;br /&gt;D 18:28:27.172 [DFU] gatt.discoverServices()&lt;br /&gt;I 18:28:27.175 [DFU] Services discovered&lt;br /&gt;D 18:28:27.198 [DFU] wait(1000)&lt;br /&gt;W 18:28:28.213 [DFU] Application with buttonless update found&lt;br /&gt;V 18:28:28.213 [DFU] Jumping to the DFU Bootloader...&lt;br /&gt;V 18:28:28.213 [DFU] Enabling indications for 8ec90003-f315-4f60-9fb8-838830daea50&lt;br /&gt;D 18:28:28.213 [DFU] gatt.setCharacteristicNotification(8ec90003-f315-4f60-9fb8-838830daea50, true)&lt;br /&gt;D 18:28:28.213 [DFU] gatt.writeDescriptor(00002902-0000-1000-8000-00805f9b34fb, value=0x02-00)&lt;br /&gt;I 18:28:28.576 [DFU] Data written to descr.8ec90003-f315-4f60-9fb8-838830daea50, value (0x): 02-00&lt;br /&gt;V 18:28:28.576 [DFU] Notifications enabled for 8ec90003-f315-4f60-9fb8-838830daea50&lt;br /&gt;A 18:28:28.576 [DFU] Indications enabled&lt;br /&gt;D 18:28:28.576 [DFU] wait(1000)&lt;br /&gt;V 18:28:29.588 [DFU] Writing to characteristic 8ec90003-f315-4f60-9fb8-838830daea50&lt;br /&gt;D 18:28:29.588 [DFU] gatt.writeCharacteristic(8ec90003-f315-4f60-9fb8-838830daea50)&lt;br /&gt;A 18:28:29.967 [DFU] Enter bootloader sent (Op Code = 1)&lt;br /&gt;I 18:28:29.969 [DFU] Notification received from 8ec90003-f315-4f60-9fb8-838830daea50, value (0x): 20-01-01&lt;br /&gt;A 18:28:29.969 [DFU] Response received (Op Code = 1, Status = 1)&lt;br /&gt;D 18:28:34.181 [Callback] Connection state changed with status: 8 and new state: DISCONNECTED (0)&lt;br /&gt;E 18:28:34.181 Error 8 (0x8): GATT CONN TIMEOUT&lt;br /&gt;I 18:28:34.181 Disconnected&lt;br /&gt;I 18:28:34.183 [DFU] Disconnected by the remote device&lt;br /&gt;D 18:28:34.216 [DFU] gatt.refresh() (hidden)&lt;br /&gt;D 18:28:34.216 [DFU] gatt.close()&lt;br /&gt;V 18:28:34.216 [DFU] Scanning for the DFU Bootloader...&lt;br /&gt;D 18:28:34.217 [Broadcast] Action received: android.bluetooth.device.action.ACL_DISCONNECTED&lt;br /&gt;D 18:28:34.231 [DFU] [Broadcast] Action received: android.bluetooth.device.action.ACL_DISCONNECTED&lt;br /&gt;I 18:28:34.307 [DFU] DFU Bootloader found with address CA:CB:86:2A:F2:6E&lt;br /&gt;V 18:28:34.318 [DFU] DFU service started&lt;br /&gt;I 18:28:34.322 [DFU] Firmware file opened successfully&lt;br /&gt;D 18:28:34.322 [DFU] wait(1000)&lt;br /&gt;D 18:28:35.323 [DFU] wait(1000)&lt;br /&gt;V 18:28:36.347 [DFU] Connecting to DFU target...&lt;br /&gt;D 18:28:36.348 [DFU] gatt = device.connectGatt(autoConnect = false)&lt;br /&gt;I 18:28:36.668 [DFU] Connected to CA:CB:86:2A:F2:6E&lt;br /&gt;V 18:28:36.668 [DFU] Discovering services...&lt;br /&gt;D 18:28:36.668 [DFU] gatt.discoverServices()&lt;br /&gt;D 18:28:36.669 [DFU] [Broadcast] Action received: android.bluetooth.device.action.ACL_CONNECTED&lt;br /&gt;I 18:28:37.217 [DFU] Services discovered&lt;br /&gt;D 18:28:37.241 [DFU] wait(1000)&lt;br /&gt;V 18:28:38.226 [DFU] Requesting new MTU...&lt;br /&gt;D 18:28:38.226 [DFU] gatt.requestMtu(517)&lt;br /&gt;I 18:28:38.255 [DFU] MTU changed to: 247&lt;br /&gt;V 18:28:38.255 [DFU] Enabling notifications for 8ec90001-f315-4f60-9fb8-838830daea50&lt;br /&gt;D 18:28:38.255 [DFU] gatt.setCharacteristicNotification(8ec90001-f315-4f60-9fb8-838830daea50, true)&lt;br /&gt;D 18:28:38.256 [DFU] gatt.writeDescriptor(00002902-0000-1000-8000-00805f9b34fb, value=0x01-00)&lt;br /&gt;I 18:28:38.287 [DFU] Data written to descr.8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 01-00&lt;br /&gt;V 18:28:38.287 [DFU] Notifications enabled for 8ec90001-f315-4f60-9fb8-838830daea50&lt;br /&gt;A 18:28:38.287 [DFU] Notifications enabled&lt;br /&gt;D 18:28:38.287 [DFU] wait(1000)&lt;br /&gt;V 18:28:39.298 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50&lt;br /&gt;D 18:28:39.298 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)&lt;br /&gt;I 18:28:39.320 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 06-01&lt;br /&gt;I 18:28:39.320 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-06-01-00-02-00-00-00-00-00-00-00-00-00-00&lt;br /&gt;A 18:28:39.321 [DFU] Command object info received (Max size = 512, Offset = 0, CRC = 00000000)&lt;br /&gt;V 18:28:39.321 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50&lt;br /&gt;D 18:28:39.321 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)&lt;br /&gt;I 18:28:39.350 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 02-00-00&lt;br /&gt;I 18:28:39.350 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-02-01&lt;br /&gt;A 18:28:39.351 [DFU] Packet Receipt Notif disabled (Op Code = 2, Value = 0)&lt;br /&gt;V 18:28:39.351 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50&lt;br /&gt;D 18:28:39.351 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)&lt;br /&gt;I 18:28:39.379 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 01-01-8D-00-00-00&lt;br /&gt;I 18:28:39.380 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-01-01&lt;br /&gt;A 18:28:39.380 [DFU] Command object created&lt;br /&gt;V 18:28:39.380 [DFU] Writing to characteristic 8ec90002-f315-4f60-9fb8-838830daea50&lt;br /&gt;D 18:28:39.380 [DFU] gatt.writeCharacteristic(8ec90002-f315-4f60-9fb8-838830daea50)&lt;br /&gt;I 18:28:39.383 [DFU] Data written to 8ec90002-f315-4f60-9fb8-838830daea50, value (0x): 12-8A-01-0A-44-08-01-12-40-08-08-10-34-1A-02-B6-01-20-00-28-00-30-00-38-F4-8E-03-42-24-08-03-12-20-1F-47-A6-16-ED-B6-A4-56-44-50-D7-E3-A9-D0-8D-6F-85-DA-9C-18-41-BA-6F-1F-76-B1-C9-38-BB-1E-DE-A7-48-00-52-04-08-01-12-00-10-00-1A-40-82-B7-D2-1E-8A-CA-8A-3A-F2-B2-84-A4-6E-24-65-AC-85-52-E7-3C-D6-E7-3F-40-A0-BC-E5-4D-C7-25-DB-E6-23-93-7B-7E-84-60-87-1B-96-CD-8F-B1-62-08-CF-F3-A0-0D-03-53-F0-31-1B-6E-C1-47-6D-2B-05-68-1C-E8&lt;br /&gt;A 18:28:39.383 [DFU] Command object sent (CRC = 284BB858)&lt;br /&gt;V 18:28:39.383 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50&lt;br /&gt;D 18:28:39.383 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)&lt;br /&gt;I 18:28:39.409 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 03&lt;br /&gt;I 18:28:39.410 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-03-01-8D-00-00-00-58-B8-4B-28&lt;br /&gt;A 18:28:39.410 [DFU] Checksum received (Offset = 141, CRC = 284BB858)&lt;br /&gt;V 18:28:39.410 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50&lt;br /&gt;D 18:28:39.410 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)&lt;br /&gt;I 18:28:39.439 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 04&lt;br /&gt;I 18:28:39.455 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-04-01&lt;br /&gt;A 18:28:39.455 [DFU] Command object executed&lt;br /&gt;V 18:28:39.455 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50&lt;br /&gt;D 18:28:39.455 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)&lt;br /&gt;I 18:28:39.486 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 02-0A-00&lt;br /&gt;I 18:28:39.492 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-02-01&lt;br /&gt;A 18:28:39.499 [DFU] Packet Receipt Notif Req (Op Code = 2) sent (Value = 10)&lt;br /&gt;V 18:28:39.499 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50&lt;br /&gt;D 18:28:39.499 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)&lt;br /&gt;I 18:28:39.619 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 06-02&lt;br /&gt;I 18:28:39.622 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-06-01-00-10-00-00-00-00-00-00-00-00-00-00&lt;br /&gt;A 18:28:39.622 [DFU] Data object info received (Max size = 4096, Offset = 0, CRC = 00000000)&lt;br /&gt;V 18:28:39.657 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50&lt;br /&gt;D 18:28:39.657 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)&lt;br /&gt;I 18:28:39.665 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 01-02-00-10-00-00&lt;br /&gt;I 18:28:39.665 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-01-01&lt;br /&gt;A 18:28:39.665 [DFU] Data object (1/13) created&lt;br /&gt;D 18:28:39.665 [DFU] wait(400)&lt;br /&gt;A 18:28:40.067 [DFU] Uploading firmware...&lt;br /&gt;V 18:28:40.067 [DFU] Sending firmware to characteristic 8ec90002-f315-4f60-9fb8-838830daea50...&lt;br /&gt;V 18:28:40.296 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50&lt;br /&gt;D 18:28:40.296 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)&lt;br /&gt;I 18:28:40.414 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 03&lt;br /&gt;I 18:28:40.415 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-03-01-00-10-00-00-C8-9B-9A-AC&lt;br /&gt;A 18:28:40.415 [DFU] Checksum received (Offset = 4096, CRC = AC9A9BC8)&lt;br /&gt;V 18:28:40.415 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50&lt;br /&gt;D 18:28:40.415 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)&lt;br /&gt;I 18:28:40.444 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 04&lt;br /&gt;I 18:28:40.445 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-04-01&lt;br /&gt;A 18:28:40.445 [DFU] Data object executed&lt;br /&gt;V 18:28:40.445 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50&lt;br /&gt;D 18:28:40.445 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)&lt;br /&gt;I 18:28:40.476 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 01-02-00-10-00-00&lt;br /&gt;I 18:28:40.477 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-01-01&lt;br /&gt;A 18:28:40.477 [DFU] Data object (2/13) created&lt;br /&gt;A 18:28:40.477 [DFU] Uploading firmware...&lt;br /&gt;V 18:28:40.477 [DFU] Sending firmware to characteristic 8ec90002-f315-4f60-9fb8-838830daea50...&lt;br /&gt;V 18:28:40.797 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50&lt;br /&gt;D 18:28:40.797 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)&lt;br /&gt;I 18:28:40.894 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 03&lt;br /&gt;I 18:28:40.895 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-03-01-00-20-00-00-DB-F8-49-8B&lt;br /&gt;A 18:28:40.895 [DFU] Checksum received (Offset = 8192, CRC = 8B49F8DB)&lt;br /&gt;V 18:28:40.895 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50&lt;br /&gt;D 18:28:40.895 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)&lt;br /&gt;I 18:28:40.925 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 04&lt;br /&gt;I 18:28:40.925 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-04-01&lt;br /&gt;A 18:28:40.926 [DFU] Data object executed&lt;br /&gt;V 18:28:40.926 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50&lt;br /&gt;D 18:28:40.926 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)&lt;br /&gt;I 18:28:40.954 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 01-02-00-10-00-00&lt;br /&gt;I 18:28:40.955 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-01-01&lt;br /&gt;A 18:28:40.955 [DFU] Data object (3/13) created&lt;br /&gt;A 18:28:40.955 [DFU] Uploading firmware...&lt;br /&gt;V 18:28:40.955 [DFU] Sending firmware to characteristic 8ec90002-f315-4f60-9fb8-838830daea50...&lt;br /&gt;V 18:28:41.304 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50&lt;br /&gt;D 18:28:41.304 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)&lt;br /&gt;I 18:28:41.404 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 03&lt;br /&gt;I 18:28:41.405 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-03-01-00-30-00-00-C0-58-6A-94&lt;br /&gt;A 18:28:41.405 [DFU] Checksum received (Offset = 12288, CRC = 946A58C0)&lt;br /&gt;V 18:28:41.405 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50&lt;br /&gt;D 18:28:41.405 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)&lt;br /&gt;I 18:28:41.434 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 04&lt;br /&gt;I 18:28:41.435 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-04-01&lt;br /&gt;A 18:28:41.435 [DFU] Data object executed&lt;br /&gt;V 18:28:41.435 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50&lt;br /&gt;D 18:28:41.435 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)&lt;br /&gt;I 18:28:41.471 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 01-02-00-10-00-00&lt;br /&gt;I 18:28:41.471 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-01-01&lt;br /&gt;A 18:28:41.471 [DFU] Data object (4/13) created&lt;br /&gt;A 18:28:41.471 [DFU] Uploading firmware...&lt;br /&gt;V 18:28:41.471 [DFU] Sending firmware to characteristic 8ec90002-f315-4f60-9fb8-838830daea50...&lt;br /&gt;V 18:28:41.787 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50&lt;br /&gt;D 18:28:41.787 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)&lt;br /&gt;I 18:28:41.915 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 03&lt;br /&gt;I 18:28:41.921 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-03-01-00-40-00-00-5D-2B-A3-5C&lt;br /&gt;A 18:28:41.921 [DFU] Checksum received (Offset = 16384, CRC = 5CA32B5D)&lt;br /&gt;V 18:28:41.921 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50&lt;br /&gt;D 18:28:41.921 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)&lt;br /&gt;I 18:28:41.944 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 04&lt;br /&gt;I 18:28:41.944 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-04-01&lt;br /&gt;A 18:28:41.945 [DFU] Data object executed&lt;br /&gt;V 18:28:41.945 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50&lt;br /&gt;D 18:28:41.945 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)&lt;br /&gt;I 18:28:41.974 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 01-02-00-10-00-00&lt;br /&gt;I 18:28:41.974 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-01-01&lt;br /&gt;A 18:28:41.975 [DFU] Data object (5/13) created&lt;br /&gt;A 18:28:41.975 [DFU] Uploading firmware...&lt;br /&gt;V 18:28:41.975 [DFU] Sending firmware to characteristic 8ec90002-f315-4f60-9fb8-838830daea50...&lt;br /&gt;V 18:28:42.289 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50&lt;br /&gt;D 18:28:42.289 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)&lt;br /&gt;I 18:28:42.395 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 03&lt;br /&gt;I 18:28:42.395 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-03-01-00-50-00-00-F1-13-73-81&lt;br /&gt;A 18:28:42.396 [DFU] Checksum received (Offset = 20480, CRC = 817313F1)&lt;br /&gt;V 18:28:42.396 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50&lt;br /&gt;D 18:28:42.396 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)&lt;br /&gt;I 18:28:42.425 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 04&lt;br /&gt;I 18:28:42.426 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-04-01&lt;br /&gt;A 18:28:42.426 [DFU] Data object executed&lt;br /&gt;V 18:28:42.426 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50&lt;br /&gt;D 18:28:42.426 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)&lt;br /&gt;I 18:28:42.457 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 01-02-00-10-00-00&lt;br /&gt;I 18:28:42.457 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-01-01&lt;br /&gt;A 18:28:42.457 [DFU] Data object (6/13) created&lt;br /&gt;A 18:28:42.457 [DFU] Uploading firmware...&lt;br /&gt;V 18:28:42.457 [DFU] Sending firmware to characteristic 8ec90002-f315-4f60-9fb8-838830daea50...&lt;br /&gt;V 18:28:42.793 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50&lt;br /&gt;D 18:28:42.794 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)&lt;br /&gt;I 18:28:42.889 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 03&lt;br /&gt;I 18:28:42.890 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-03-01-00-60-00-00-33-F6-84-51&lt;br /&gt;A 18:28:42.891 [DFU] Checksum received (Offset = 24576, CRC = 5184F633)&lt;br /&gt;V 18:28:42.891 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50&lt;br /&gt;D 18:28:42.891 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)&lt;br /&gt;I 18:28:42.926 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 04&lt;br /&gt;I 18:28:42.926 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-04-01&lt;br /&gt;A 18:28:42.928 [DFU] Data object executed&lt;br /&gt;V 18:28:42.928 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50&lt;br /&gt;D 18:28:42.928 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)&lt;br /&gt;I 18:28:42.950 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 01-02-00-10-00-00&lt;br /&gt;I 18:28:42.951 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-01-01&lt;br /&gt;A 18:28:42.951 [DFU] Data object (7/13) created&lt;br /&gt;A 18:28:42.951 [DFU] Uploading firmware...&lt;br /&gt;V 18:28:42.951 [DFU] Sending firmware to characteristic 8ec90002-f315-4f60-9fb8-838830daea50...&lt;br /&gt;V 18:28:43.275 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50&lt;br /&gt;D 18:28:43.275 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)&lt;br /&gt;I 18:28:43.384 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 03&lt;br /&gt;I 18:28:43.385 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-03-01-00-70-00-00-23-6C-81-69&lt;br /&gt;A 18:28:43.385 [DFU] Checksum received (Offset = 28672, CRC = 69816C23)&lt;br /&gt;V 18:28:43.385 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50&lt;br /&gt;D 18:28:43.385 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)&lt;br /&gt;I 18:28:43.415 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 04&lt;br /&gt;I 18:28:43.415 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-04-01&lt;br /&gt;A 18:28:43.415 [DFU] Data object executed&lt;br /&gt;V 18:28:43.415 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50&lt;br /&gt;D 18:28:43.415 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)&lt;br /&gt;I 18:28:43.444 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 01-02-00-10-00-00&lt;br /&gt;I 18:28:43.445 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-01-01&lt;br /&gt;A 18:28:43.445 [DFU] Data object (8/13) created&lt;br /&gt;A 18:28:43.445 [DFU] Uploading firmware...&lt;br /&gt;V 18:28:43.445 [DFU] Sending firmware to characteristic 8ec90002-f315-4f60-9fb8-838830daea50...&lt;br /&gt;V 18:28:43.791 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50&lt;br /&gt;D 18:28:43.791 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)&lt;br /&gt;I 18:28:43.894 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 03&lt;br /&gt;I 18:28:43.896 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-03-01-00-80-00-00-2B-2D-DC-FD&lt;br /&gt;A 18:28:43.896 [DFU] Checksum received (Offset = 32768, CRC = FDDC2D2B)&lt;br /&gt;V 18:28:43.896 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50&lt;br /&gt;D 18:28:43.896 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)&lt;br /&gt;I 18:28:43.924 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 04&lt;br /&gt;I 18:28:43.925 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-04-01&lt;br /&gt;A 18:28:43.925 [DFU] Data object executed&lt;br /&gt;V 18:28:43.925 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50&lt;br /&gt;D 18:28:43.925 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)&lt;br /&gt;I 18:28:43.954 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 01-02-00-10-00-00&lt;br /&gt;I 18:28:43.955 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-01-01&lt;br /&gt;A 18:28:43.955 [DFU] Data object (9/13) created&lt;br /&gt;A 18:28:43.955 [DFU] Uploading firmware...&lt;br /&gt;V 18:28:43.955 [DFU] Sending firmware to characteristic 8ec90002-f315-4f60-9fb8-838830daea50...&lt;br /&gt;V 18:28:44.298 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50&lt;br /&gt;D 18:28:44.298 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)&lt;br /&gt;I 18:28:44.389 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 03&lt;br /&gt;I 18:28:44.390 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-03-01-00-90-00-00-FA-14-61-59&lt;br /&gt;A 18:28:44.391 [DFU] Checksum received (Offset = 36864, CRC = 596114FA)&lt;br /&gt;V 18:28:44.391 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50&lt;br /&gt;D 18:28:44.391 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)&lt;br /&gt;I 18:28:44.419 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 04&lt;br /&gt;I 18:28:44.420 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-04-01&lt;br /&gt;A 18:28:44.421 [DFU] Data object executed&lt;br /&gt;V 18:28:44.421 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50&lt;br /&gt;D 18:28:44.421 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)&lt;br /&gt;I 18:28:44.450 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 01-02-00-10-00-00&lt;br /&gt;I 18:28:44.451 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-01-01&lt;br /&gt;A 18:28:44.451 [DFU] Data object (10/13) created&lt;br /&gt;A 18:28:44.451 [DFU] Uploading firmware...&lt;br /&gt;V 18:28:44.451 [DFU] Sending firmware to characteristic 8ec90002-f315-4f60-9fb8-838830daea50...&lt;br /&gt;V 18:28:44.814 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50&lt;br /&gt;D 18:28:44.814 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)&lt;br /&gt;I 18:28:44.884 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 03&lt;br /&gt;I 18:28:44.885 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-03-01-00-A0-00-00-DC-0B-2D-15&lt;br /&gt;A 18:28:44.885 [DFU] Checksum received (Offset = 40960, CRC = 152D0BDC)&lt;br /&gt;V 18:28:44.885 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50&lt;br /&gt;D 18:28:44.885 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)&lt;br /&gt;I 18:28:44.914 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 04&lt;br /&gt;I 18:28:44.915 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-04-01&lt;br /&gt;A 18:28:44.915 [DFU] Data object executed&lt;br /&gt;V 18:28:44.915 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50&lt;br /&gt;D 18:28:44.915 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)&lt;br /&gt;I 18:28:44.944 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 01-02-00-10-00-00&lt;br /&gt;I 18:28:44.945 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-01-01&lt;br /&gt;A 18:28:44.947 [DFU] Data object (11/13) created&lt;br /&gt;A 18:28:44.947 [DFU] Uploading firmware...&lt;br /&gt;V 18:28:44.947 [DFU] Sending firmware to characteristic 8ec90002-f315-4f60-9fb8-838830daea50...&lt;br /&gt;V 18:28:45.288 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50&lt;br /&gt;D 18:28:45.288 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)&lt;br /&gt;I 18:28:45.394 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 03&lt;br /&gt;I 18:28:45.395 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-03-01-00-B0-00-00-1C-7D-B5-44&lt;br /&gt;A 18:28:45.395 [DFU] Checksum received (Offset = 45056, CRC = 44B57D1C)&lt;br /&gt;V 18:28:45.395 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50&lt;br /&gt;D 18:28:45.395 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)&lt;br /&gt;I 18:28:45.424 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 04&lt;br /&gt;I 18:28:45.425 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-04-01&lt;br /&gt;A 18:28:45.431 [DFU] Data object executed&lt;br /&gt;V 18:28:45.431 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50&lt;br /&gt;D 18:28:45.431 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)&lt;br /&gt;I 18:28:45.454 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 01-02-00-10-00-00&lt;br /&gt;I 18:28:45.456 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-01-01&lt;br /&gt;A 18:28:45.456 [DFU] Data object (12/13) created&lt;br /&gt;A 18:28:45.456 [DFU] Uploading firmware...&lt;br /&gt;V 18:28:45.456 [DFU] Sending firmware to characteristic 8ec90002-f315-4f60-9fb8-838830daea50...&lt;br /&gt;V 18:28:45.803 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50&lt;br /&gt;D 18:28:45.803 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)&lt;br /&gt;I 18:28:45.889 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 03&lt;br /&gt;I 18:28:45.890 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-03-01-00-C0-00-00-8D-4F-FE-AC&lt;br /&gt;A 18:28:45.891 [DFU] Checksum received (Offset = 49152, CRC = ACFE4F8D)&lt;br /&gt;V 18:28:45.891 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50&lt;br /&gt;D 18:28:45.891 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)&lt;br /&gt;I 18:28:45.919 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 04&lt;br /&gt;I 18:28:45.919 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-04-01&lt;br /&gt;A 18:28:45.920 [DFU] Data object executed&lt;br /&gt;V 18:28:45.920 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50&lt;br /&gt;D 18:28:45.920 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)&lt;br /&gt;I 18:28:45.949 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 01-02-74-07-00-00&lt;br /&gt;I 18:28:45.950 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-01-01&lt;br /&gt;A 18:28:45.951 [DFU] Data object (13/13) created&lt;br /&gt;A 18:28:45.951 [DFU] Uploading firmware...&lt;br /&gt;V 18:28:45.951 [DFU] Sending firmware to characteristic 8ec90002-f315-4f60-9fb8-838830daea50...&lt;br /&gt;V 18:28:45.992 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50&lt;br /&gt;D 18:28:45.992 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)&lt;br /&gt;I 18:28:46.190 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 03&lt;br /&gt;I 18:28:46.190 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-03-01-74-C7-00-00-D1-33-1B-EB&lt;br /&gt;A 18:28:46.191 [DFU] Checksum received (Offset = 51060, CRC = EB1B33D1)&lt;br /&gt;V 18:28:46.191 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50&lt;br /&gt;D 18:28:46.191 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)&lt;br /&gt;I 18:28:46.220 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 04&lt;br /&gt;I 18:28:46.393 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-04-01&lt;br /&gt;A 18:28:46.393 [DFU] Data object executed&lt;br /&gt;A 18:28:46.393 [DFU] Upload completed in 6353 ms&lt;br /&gt;I 18:28:46.799 [DFU] Disconnected by the remote device&lt;br /&gt;D 18:28:46.846 [DFU] gatt.refresh() (hidden)&lt;br /&gt;D 18:28:46.846 [DFU] gatt.close()&lt;br /&gt;D 18:28:46.846 [DFU] wait(1400)&lt;br /&gt;D 18:28:46.847 [DFU] [Broadcast] Action received: android.bluetooth.device.action.ACL_DISCONNECTED&lt;br /&gt;D 18:28:48.213 gatt.close()&lt;br /&gt;D 18:28:48.215 wait(200)&lt;br /&gt;V 18:28:48.416 Connecting to CA:CB:86:2A:F2:6D...&lt;br /&gt;D 18:28:48.417 gatt = device.connectGatt(autoConnect = false, TRANSPORT_LE, preferred PHY = LE 1M)&lt;br /&gt;D 18:28:49.900 [Broadcast] Action received: android.bluetooth.device.action.ACL_CONNECTED&lt;br /&gt;D 18:28:49.924 [Callback] Connection state changed with status: 0 and new state: CONNECTED (2)&lt;br /&gt;I 18:28:49.924 Connected to CA:CB:86:2A:F2:6D&lt;br /&gt;V 18:28:49.949 Discovering services...&lt;br /&gt;D 18:28:49.949 gatt.discoverServices()&lt;br /&gt;I 18:28:50.234 Connection parameters updated (interval: 7.5ms, latency: 0, timeout: 5000ms)&lt;br /&gt;D 18:28:50.461 [Callback] Services discovered with status: 0&lt;br /&gt;I 18:28:50.461 Services discovered&lt;br /&gt;V 18:28:50.471 Generic Access (0x1800)&lt;br /&gt;- Device Name [R W] (0x2A00)&lt;br /&gt;- Appearance [R] (0x2A01)&lt;br /&gt;- Peripheral Preferred Connection Parameters [R] (0x2A04)&lt;br /&gt;- Central Address Resolution [R] (0x2AA6)&lt;br /&gt;Generic Attribute (0x1801)&lt;br /&gt;- Service Changed [I] (0x2A05)&lt;br /&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;Client Characteristic Configuration (0x2902)&lt;br /&gt;Secure DFU Service (0xFE59)&lt;br /&gt;- Buttonless DFU [I W] (8ec90003-f315-4f60-9fb8-838830daea50)&lt;br /&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;Client Characteristic Configuration (0x2902)&lt;br /&gt;D 18:28:50.472 gatt.setCharacteristicNotification(00002a05-0000-1000-8000-00805f9b34fb, true)&lt;br /&gt;I 18:28:50.518 Connection parameters updated (interval: 48.75ms, latency: 0, timeout: 5000ms)&lt;br /&gt;I 18:28:55.062 Connection parameters updated (interval: 198.75ms, latency: 0, timeout: 4000ms)&lt;/p&gt;
&lt;p&gt;//===========================&lt;/p&gt;
&lt;p&gt;It failed after write characteristic&amp;nbsp;- 06 01 01&amp;nbsp;&lt;/p&gt;
&lt;p&gt;I read some post on your devzone, someone mentioned it may be the Jlink driver has to go back to previous version.&lt;/p&gt;
&lt;p&gt;Also my nrfutil is 6.1.0 version, it needs python3..7.2. But python3.7.2 is installed on usr/local/bin&lt;/p&gt;
&lt;p&gt;while python3.5.2 is installed on /usr/bin.&lt;/p&gt;
&lt;p&gt;Just for informational purpose.&lt;/p&gt;
&lt;p&gt;&lt;/p&gt;
&lt;p&gt;Thanks,&lt;/p&gt;
&lt;p&gt;&lt;/p&gt;
&lt;p&gt;David&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: Buttonless DFU update failed</title><link>https://devzone.nordicsemi.com/thread/247417?ContentTypeID=1</link><pubDate>Wed, 29 Apr 2020 18:50:17 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:2ba59b55-9ad1-4a8b-a4eb-dd3c9eb78f78</guid><dc:creator>TigerD</dc:creator><description>&lt;p&gt;Hi Einar,&lt;/p&gt;
&lt;p&gt;&lt;/p&gt;
&lt;p&gt;I pasted output messages from nRFConnect App:&lt;/p&gt;
&lt;p&gt;14:31:52.596 Application data folder: /home/dzhou/.config/nrfconnect/pc-nrfconnect-ble&lt;br /&gt;14:31:56.805 Validating connectivity firmware for device with serial number 000683452784...&lt;br /&gt;14:32:01.790 Connectivity firmware is valid.&lt;br /&gt;14:32:01.792 Note: Adapters with Segger JLink debug probe requires MSD to be disabled to function properly on MacOS and Linux. Please visit www.nordicsemi.com/nRFConnectOSXfix for further instructions.&lt;br /&gt;14:32:01.792 Getting information from J-Link debugger...&lt;br /&gt;14:32:07.825 Found device type: unknown. J-Link firmware: J-Link OB-SAM3U128-V2-NordicSemi compiled Mar 17 2020 14:43:00.&lt;br /&gt;14:32:07.825 Connectivity firmware version: 4.1.1. SoftDevice API version: 3. Baud rate: 1000000.&lt;br /&gt;14:32:07.828 Opening adapter connected to /dev/ttyACM0&lt;br /&gt;14:32:08.777 Successfully opened /dev/ttyACM0. Baud rate: 1000000. Flow control: none. Parity: none.&lt;br /&gt;14:32:08.780 Reset performed on adapter /dev/ttyACM0&lt;br /&gt;14:32:09.858 Adapter connected to /dev/ttyACM0 opened&lt;br /&gt;14:32:10.945 Scan started&lt;br /&gt;14:32:16.009 Scan stopped&lt;br /&gt;14:32:17.639 Scan started&lt;br /&gt;14:32:20.741 Connecting to device&lt;br /&gt;14:32:20.908 Connected to device CA:CB:86:2A:F2:6D&lt;br /&gt;14:32:21.282 Attribute value read, handle: 0x03, value (0x): 53-5F-44-46-55-76-30&lt;br /&gt;14:32:25.948 Connection parameters updated for device CA:CB:86:2A:F2:6D: interval 100ms, timeout 4000ms, latency: 0&lt;br /&gt;14:33:00.135 Disconnected from device CA:CB:86:2A:F2:6D, reason: undefined&lt;br /&gt;14:33:00.140 Performing DFU with file: /media/dzhou/Data/AssetTracking/Drill/Frc_DFU/frc_dfu_1.zip&lt;br /&gt;14:33:03.957 Attribute value changed, handle: 0x11, value (0x): 02-00&lt;br /&gt;14:33:04.156 Attribute value changed, handle: 0x10, value (0x): 01&lt;br /&gt;14:33:04.161 Attribute value changed, handle: 0x10, value (0x): 20-01-01&lt;br /&gt;14:33:09.444 Attribute value changed, handle: 0x10, value (0x): 01-00&lt;br /&gt;14:33:09.474 Attribute value changed, handle: 0x0F, value (0x): 02-00-00&lt;br /&gt;14:33:09.477 Attribute value changed, handle: 0x0F, value (0x): 60-02-01&lt;br /&gt;14:33:09.579 Attribute value changed, handle: 0x0F, value (0x): 06-01&lt;br /&gt;14:33:09.597 Attribute value changed, handle: 0x0F, value (0x): 60-06-01-00-02-00-00-00-00-00-00-00-00-00-00&lt;br /&gt;14:33:09.624 Attribute value changed, handle: 0x0F, value (0x): 01-01-8D-00-00-00&lt;br /&gt;14:33:09.626 Attribute value changed, handle: 0x0F, value (0x): 60-01-01&lt;br /&gt;14:33:11.157 Received status with code 4 Unknown value, message: &amp;#39;Error sending packet to target. Code: 0x802a&amp;#39;&lt;br /&gt;14:33:11.191 Attribute value changed, handle: 0x0F, value (0x): 01-01-8D-00-00-00&lt;br /&gt;14:33:11.192 Attribute value changed, handle: 0x0F, value (0x): 60-01-01&lt;br /&gt;14:33:12.698 Received status with code 4 Unknown value, message: &amp;#39;Error sending packet to target. Code: 0x802a&amp;#39;&lt;br /&gt;14:33:12.740 Attribute value changed, handle: 0x0F, value (0x): 01-01-8D-00-00-00&lt;br /&gt;14:33:12.742 Attribute value changed, handle: 0x0F, value (0x): 60-01-01&lt;br /&gt;14:33:14.248 DFU failed with error: When writing data to DFU Packet Characteristic on DFU Target: Failed to write to attribute with handle: 13: Error occured when writing. Errorcode: Unknown value (0x8005) .&lt;br /&gt;14:33:14.262 Received status with code 4 Unknown value, message: &amp;#39;Error sending packet to target. Code: 0x802a&amp;#39;&lt;/p&gt;
&lt;p&gt;&lt;/p&gt;
&lt;p&gt;Thank you,&lt;/p&gt;
&lt;p&gt;David&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: Buttonless DFU update failed</title><link>https://devzone.nordicsemi.com/thread/247216?ContentTypeID=1</link><pubDate>Wed, 29 Apr 2020 07:13:50 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:1b18c77e-b526-43b4-8a98-d9f57f433e64</guid><dc:creator>Einar Thorsrud</dc:creator><description>&lt;p&gt;Hi&amp;nbsp;David,&lt;/p&gt;
&lt;p&gt;I do not have any immediate idea about what the problem is. Can you upload the full log from nRF Connect BLE? You ill find it using a button above the log output window, as shown here:&lt;/p&gt;
&lt;p&gt;&lt;img alt=" " src="https://devzone.nordicsemi.com/resized-image/__size/320x240/__key/support-attachments/beef5d1b77644c448dabff31668f3a47-3e18be86603e4f1c8cc1360ffa16be54/nrf_5F00_connect_5F00_ble_5F00_log.PNG" /&gt;&lt;/p&gt;
&lt;p&gt;Do you also have a log from the nRF side (using the _debug bootloader with RTT logging)?&lt;/p&gt;
&lt;p&gt;Einar&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item></channel></rss>