<?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>NRF52832 Firmware Upgrade using Esp8266</title><link>https://devzone.nordicsemi.com/f/nordic-q-a/55848/nrf52832-firmware-upgrade-using-esp8266</link><description>Hi Team 
 
 I am trying to implement the firmware upgrade for master controller nrf52832 on chip using esp8266 over uart and I am very new with this boot-loader part. 
 I had gone through many examples and trying to understand the flow from where to start</description><dc:language>en-US</dc:language><generator>Telligent Community 13</generator><lastBuildDate>Fri, 15 May 2020 08:46:29 GMT</lastBuildDate><atom:link rel="self" type="application/rss+xml" href="https://devzone.nordicsemi.com/f/nordic-q-a/55848/nrf52832-firmware-upgrade-using-esp8266" /><item><title>RE: NRF52832 Firmware Upgrade using Esp8266</title><link>https://devzone.nordicsemi.com/thread/250116?ContentTypeID=1</link><pubDate>Fri, 15 May 2020 08:46:29 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:c3df5545-0a7d-49d2-9c2a-0f5d3be4b1ce</guid><dc:creator>Vaibhav_Bansal</dc:creator><description>&lt;p&gt;Hi&amp;nbsp;&lt;/p&gt;
&lt;p&gt;I am able to resolve that SDK issue&lt;/p&gt;
&lt;p&gt;thanks for your time.&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: NRF52832 Firmware Upgrade using Esp8266</title><link>https://devzone.nordicsemi.com/thread/250096?ContentTypeID=1</link><pubDate>Fri, 15 May 2020 08:04:25 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:87771ba1-ae57-4503-adfa-1cc4968b154b</guid><dc:creator>Hung Bui</dc:creator><description>&lt;p&gt;Please follow the documentation:&amp;nbsp;&lt;a href="https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.sdk5.v14.2.0/sdk_app_serial_dfu_bootloader.html?cp=7_5_3_4_4_2"&gt;https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.sdk5.v14.2.0/sdk_app_serial_dfu_bootloader.html?cp=7_5_3_4_4_2&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;You need to install micro ecc (step 2)&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: NRF52832 Firmware Upgrade using Esp8266</title><link>https://devzone.nordicsemi.com/thread/249881?ContentTypeID=1</link><pubDate>Thu, 14 May 2020 09:30:02 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:b5e162e3-df6b-4c14-be1c-0287c6408742</guid><dc:creator>Vaibhav_Bansal</dc:creator><description>&lt;p&gt;I am trying with secure dfu serial example on nordic DK SDk 14.2., will get back to you with results.&lt;/p&gt;
&lt;p&gt;&lt;/p&gt;
&lt;p&gt;and my SDK version is 14.2, will this example work for 14.2 as well?&lt;/p&gt;
&lt;p&gt;&lt;/p&gt;
&lt;p&gt;SDK 14.2 example secure_dfu_serial is not working it is throwing error&amp;nbsp;&lt;/p&gt;
&lt;p&gt;SEGGER/SEGGER Embedded Studio for ARM 4.18/gcc/arm-none-eabi/bin/ld: cannot find ../../../../../external/micro-ecc/nrf52hf_armgcc/armgcc/micro_ecc_lib_nrf52.a: no such file or directory.&lt;/p&gt;
&lt;p&gt;I am bit confused even if SDK 14.2 support serial DFU or not.&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: NRF52832 Firmware Upgrade using Esp8266</title><link>https://devzone.nordicsemi.com/thread/249855?ContentTypeID=1</link><pubDate>Thu, 14 May 2020 08:31:53 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:6d4b406a-c8cd-4b85-b822-d6a5df9d3251</guid><dc:creator>Hung Bui</dc:creator><description>&lt;p&gt;I have an example of combining UART DFU and BLE DFU in SDK v15.2 that you can download here: &lt;a href="https://devzone.nordicsemi.com/f/nordic-q-a/35431/dfu-over-ble-and-usb/166471#166471"&gt;https://devzone.nordicsemi.com/f/nordic-q-a/35431/dfu-over-ble-and-usb/166471#166471&lt;/a&gt;&lt;br /&gt;But before that please make sure you can do UART DFU with the stock UART bootloader.&amp;nbsp;&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: NRF52832 Firmware Upgrade using Esp8266</title><link>https://devzone.nordicsemi.com/thread/249824?ContentTypeID=1</link><pubDate>Thu, 14 May 2020 04:52:10 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:f3f1645d-ac89-43c0-bf2b-e6e0ba8532f2</guid><dc:creator>Vaibhav_Bansal</dc:creator><description>&lt;p&gt;Apologies for not making myself clear.&lt;/p&gt;
&lt;p&gt;I meant is Serial DFU and BLE DFU are present in Examples in SDK14.2.&amp;nbsp;&lt;/p&gt;
&lt;p&gt;What I am doing is, I had a code that supports BLE DFU and working fine. In the same code I had enable the Serial DFU also. But only use one at a time, either use BLE or use Serial.&lt;/p&gt;
&lt;p&gt;&lt;/p&gt;
&lt;p&gt;In the field I don&amp;#39;t have any BLE connections at client site so in that case I will using Serial DFU to upgrade my nrf firmware and where BLE is available I will be using BLE DFU.&lt;/p&gt;
&lt;p&gt;&lt;/p&gt;
&lt;p&gt;I have to implement those feature in same firmware because I am not aware which device will be going to client, so all devices should support both.&lt;/p&gt;
&lt;p&gt;So, after all I did I am getting this error that I had mentioned earlier.&lt;/p&gt;
&lt;p&gt;Is there any way to resolve this error because my DFU controller is ready for testing, only this error is causing problems.&lt;/p&gt;
&lt;p&gt;&lt;/p&gt;
&lt;p&gt;Please suggest what should I do in this.&lt;/p&gt;
&lt;p&gt;Currently I am trying with example for Serial DFU mentioned in SDK 14.2 will share the results here.&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: NRF52832 Firmware Upgrade using Esp8266</title><link>https://devzone.nordicsemi.com/thread/249732?ContentTypeID=1</link><pubDate>Wed, 13 May 2020 12:52:40 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:0ce03654-4e15-4c0e-a1c6-fb29a9de1d5d</guid><dc:creator>Hung Bui</dc:creator><description>&lt;p&gt;I&amp;#39;m not aware of an example in SDK v14.2 that support both BLE and Serial. From where you got it ?&amp;nbsp;&lt;/p&gt;
&lt;p&gt;Again, please try to always test with stock example first and make sure it works before you test with anything else.&amp;nbsp;&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: NRF52832 Firmware Upgrade using Esp8266</title><link>https://devzone.nordicsemi.com/thread/249640?ContentTypeID=1</link><pubDate>Wed, 13 May 2020 09:33:59 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:001a6c00-9933-4787-b664-968fe86bbfb5</guid><dc:creator>Vaibhav_Bansal</dc:creator><description>&lt;p&gt;On bootloader I didn&amp;#39;t make any changes:&lt;/p&gt;
&lt;p&gt;I am using SDK 14.2 that supports BLE DFU and Serial DFU both.&lt;/p&gt;
&lt;p&gt;Yes with PC using NRF util I am getting same response.&lt;/p&gt;
&lt;p&gt;DFU master I had studied that packet protocol that needed to be sent and design a logic accordingly.&lt;/p&gt;
&lt;p&gt;After more debugging&amp;nbsp; I had observed that -&amp;nbsp;&lt;/p&gt;
&lt;p&gt;&lt;strong&gt;sd_flash_page_erase(p_op-&amp;gt;erase.page + p_op-&amp;gt;erase.progress);&lt;/strong&gt;&lt;/p&gt;
&lt;p&gt;This function is not returning only in case of serial dfu but working fine in BLE DFU.&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: NRF52832 Firmware Upgrade using Esp8266</title><link>https://devzone.nordicsemi.com/thread/249629?ContentTypeID=1</link><pubDate>Wed, 13 May 2020 09:12:28 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:eb95c0d1-3157-4440-b24a-52cf023b0642</guid><dc:creator>Hung Bui</dc:creator><description>&lt;p&gt;It&amp;#39;s been a few months so I would need to have an update of what you are working on.&amp;nbsp;&lt;/p&gt;
&lt;p&gt;On the bootloader side, did you modify anything&amp;nbsp; ? Have you tried to test doing DFU to a unmodified bootloader from PC (instead of ESP) ?&lt;br /&gt;&lt;br /&gt;On the DFU master side, have you managed to build it ? Have you tested that with unmodified bootloader ?&amp;nbsp;&lt;br /&gt;Which SDK version are you working on ?&amp;nbsp;&lt;br /&gt;Are you combining BLE DFU bootloader and UART DFU bootloader ?&amp;nbsp;&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: NRF52832 Firmware Upgrade using Esp8266</title><link>https://devzone.nordicsemi.com/thread/249514?ContentTypeID=1</link><pubDate>Tue, 12 May 2020 14:10:38 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:410556e4-307d-4a37-8e05-bc7401a1628b</guid><dc:creator>Vaibhav_Bansal</dc:creator><description>&lt;p&gt;Softdevice is present. But I had a doubt that why it is working in BLE mode but not in Serial mode.&amp;nbsp;&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: NRF52832 Firmware Upgrade using Esp8266</title><link>https://devzone.nordicsemi.com/thread/249444?ContentTypeID=1</link><pubDate>Tue, 12 May 2020 11:56:48 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:4c736d07-1997-4d90-b44e-00324fda023a</guid><dc:creator>Hung Bui</dc:creator><description>&lt;p&gt;Please check if you have the softdevice when you test with the serial DFU ?&amp;nbsp;&lt;br /&gt;Without softdevice, the flash storage library to be used is&amp;nbsp;nrf_fstorage_nvmc.c .&amp;nbsp;&lt;/p&gt;
&lt;p&gt;If there is the softdevice , then flash storage backend library to be used is&amp;nbsp;nrf_fstorage_sd.c&amp;nbsp;&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: NRF52832 Firmware Upgrade using Esp8266</title><link>https://devzone.nordicsemi.com/thread/249421?ContentTypeID=1</link><pubDate>Tue, 12 May 2020 11:39:01 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:155fda27-aa84-419b-b728-ecf6928785fa</guid><dc:creator>Vaibhav_Bansal</dc:creator><description>&lt;p&gt;&lt;pre class="ui-code" data-mode="c_cpp"&gt;    if (    ((page_addr &amp;amp; (p_fs-&amp;gt;p_flash_info-&amp;gt;erase_unit - 1)) != 0)
        ||  !addr_within_bounds(p_fs, page_addr, (len * p_fs-&amp;gt;p_flash_info-&amp;gt;erase_unit)))
    {
	
        return NRF_ERROR_INVALID_ADDR;
    }
    print(LL_INFO,&amp;quot;333333\n&amp;quot;);
    return (p_fs-&amp;gt;p_api)-&amp;gt;erase(p_fs, page_addr, len, p_context);&lt;/pre&gt;&lt;/p&gt;
&lt;p&gt;&lt;/p&gt;
&lt;p&gt;This code is not returning during execution of OP command in serial DFU mode but working in BLE DFU .&lt;/p&gt;
&lt;p&gt;I am not able to understand the reason, any suggestions please!&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: NRF52832 Firmware Upgrade using Esp8266</title><link>https://devzone.nordicsemi.com/thread/249333?ContentTypeID=1</link><pubDate>Tue, 12 May 2020 05:56:12 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:34a71cad-095d-43b9-a02c-9e61b6d03b3b</guid><dc:creator>Vaibhav_Bansal</dc:creator><description>&lt;p&gt;Hi&amp;nbsp;&lt;/p&gt;
&lt;p&gt;I am successful to get the debug logs and I found that after sending the INIT file, what I observed that when device is trying to write the update dfu settings then device got stuck and also it is happening during flash erase only.&lt;/p&gt;
&lt;p&gt;But when I do same over BLE its working, code won&amp;#39;t stuck and erase successful works.&lt;/p&gt;
&lt;p&gt;I am not able to understand the reason behind this, is there any difference between Ble DFU and Serial DFU which makes this happens&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: NRF52832 Firmware Upgrade using Esp8266</title><link>https://devzone.nordicsemi.com/thread/249332?ContentTypeID=1</link><pubDate>Tue, 12 May 2020 05:55:26 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:4df3c5d6-8547-4d4b-9a77-b09b54023949</guid><dc:creator>Vaibhav_Bansal</dc:creator><description>&lt;p&gt;Hi&amp;nbsp;&lt;/p&gt;
&lt;p&gt;I am successful to get the debug logs and I found that after sending the INIT file, what I observed that when device is trying to write the update dfu settings then device got stuck and also it is happening during flash erase only.&lt;/p&gt;
&lt;p&gt;But when I do same over BLE its working, code won&amp;#39;t stuck and erase successful works.&lt;/p&gt;
&lt;p&gt;I am not able to understand the reason behind this, is there any difference between Ble DFU and Serial DFU which makes this happens&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: NRF52832 Firmware Upgrade using Esp8266</title><link>https://devzone.nordicsemi.com/thread/241664?ContentTypeID=1</link><pubDate>Wed, 25 Mar 2020 17:57:52 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:27f19c42-ef06-4482-b122-2813c7832ea3</guid><dc:creator>Vincent Smf</dc:creator><description>&lt;p&gt;Workaround could be : &lt;br /&gt;Dump your working DFU serial connection to a file.&lt;br /&gt;Host the file. &lt;br /&gt;Then replay the serial connection from the ESP.&lt;/p&gt;
&lt;p&gt;To dump, work from source of pc-nrfutil, identify the serial output and redirect it to a file.&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: NRF52832 Firmware Upgrade using Esp8266</title><link>https://devzone.nordicsemi.com/thread/240102?ContentTypeID=1</link><pubDate>Mon, 16 Mar 2020 16:31:09 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:86179708-bf3f-4d9c-b0b0-23204b435454</guid><dc:creator>Hung Bui</dc:creator><description>&lt;p&gt;Please try to do an &amp;quot;nrfjprog.exe --eraseall&amp;quot;&amp;nbsp;in the command line.&amp;nbsp;&lt;br /&gt;You can also find the .hex file in the build folder and flash it manually using either nrfjprog or use nRF Connect programmer tool.&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: NRF52832 Firmware Upgrade using Esp8266</title><link>https://devzone.nordicsemi.com/thread/239930?ContentTypeID=1</link><pubDate>Mon, 16 Mar 2020 10:04:59 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:70bdad2d-f4ba-4ee0-827d-dc10849098cf</guid><dc:creator>Vaibhav_Bansal</dc:creator><description>&lt;p&gt;I am using Keil v5 now, and error I am getting is Fail to download&amp;nbsp; flash - &amp;quot;Cortex-M4&amp;quot;&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: NRF52832 Firmware Upgrade using Esp8266</title><link>https://devzone.nordicsemi.com/thread/239730?ContentTypeID=1</link><pubDate>Fri, 13 Mar 2020 12:54:57 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:c2175b9a-0fe4-47a8-bf1a-a8b4b572daf4</guid><dc:creator>Vaibhav_Bansal</dc:creator><description>&lt;p&gt;Hi,&lt;/p&gt;
&lt;p&gt;&lt;/p&gt;
&lt;p&gt;In SES only after providing the path to the library I am able to compile the code but It is saying slip_encode is not defined even I am able to see that in slip.c library, also I had removed that&lt;strong&gt; #ifdef i&lt;/strong&gt;n Slip.c&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: NRF52832 Firmware Upgrade using Esp8266</title><link>https://devzone.nordicsemi.com/thread/239316?ContentTypeID=1</link><pubDate>Wed, 11 Mar 2020 12:10:51 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:6e491dc6-5470-4454-bad6-6eacf0556266</guid><dc:creator>Hung Bui</dc:creator><description>&lt;p&gt;Slip.h is located in&amp;nbsp;\components\libraries\slip you need to add that path into the project&amp;#39;s include folder.&amp;nbsp;&lt;/p&gt;
&lt;p&gt;I would strongly suggest you to install Keil v5. It&amp;#39;s free to use if the compiled file &amp;lt;32kB which is the case of the example.&amp;nbsp;&lt;/p&gt;
&lt;p&gt;From that it&amp;#39;s easier to port to your SES project.&amp;nbsp;&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: NRF52832 Firmware Upgrade using Esp8266</title><link>https://devzone.nordicsemi.com/thread/239257?ContentTypeID=1</link><pubDate>Wed, 11 Mar 2020 07:46:34 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:13d6caaf-97fe-48b8-9bca-13090c39cc1f</guid><dc:creator>Vaibhav_Bansal</dc:creator><description>&lt;p&gt;I am able to resolve that now I am issue with slip.h, no such file or directory&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: NRF52832 Firmware Upgrade using Esp8266</title><link>https://devzone.nordicsemi.com/thread/239252?ContentTypeID=1</link><pubDate>Wed, 11 Mar 2020 07:02:55 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:430e094c-24d2-4003-a9ab-f8c6d12d5c97</guid><dc:creator>Vaibhav_Bansal</dc:creator><description>&lt;p&gt;Hi&lt;/p&gt;
&lt;p&gt;&lt;/p&gt;
&lt;p&gt;It is in \example\ble_peripherals.&lt;/p&gt;
&lt;p&gt;I am using SES for testing purpose first, then I will move to GCC for my project.&lt;/p&gt;
&lt;p&gt;&lt;/p&gt;
&lt;p&gt;Still getting the error.&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: NRF52832 Firmware Upgrade using Esp8266</title><link>https://devzone.nordicsemi.com/thread/238459?ContentTypeID=1</link><pubDate>Fri, 06 Mar 2020 09:34:38 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:1472d1dc-8174-4161-b838-863f5481fa68</guid><dc:creator>Hung Bui</dc:creator><description>&lt;p&gt;Have you put the project into SDK v14.2 \example\peripheral folder ?&amp;nbsp;&lt;/p&gt;
&lt;p&gt;&lt;span&gt;nrf_log_backend_serial.c is located at&amp;nbsp;\components\libraries\experimental_log\src&lt;/span&gt;&lt;/p&gt;
&lt;p&gt;&lt;span&gt;I have only modified the KEIL project, not the SES or IAR or GCC.&amp;nbsp;&lt;/span&gt;&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: NRF52832 Firmware Upgrade using Esp8266</title><link>https://devzone.nordicsemi.com/thread/238424?ContentTypeID=1</link><pubDate>Fri, 06 Mar 2020 06:36:44 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:1cabe6ad-2a4f-46cb-9e9a-4e37d549a24e</guid><dc:creator>Vaibhav_Bansal</dc:creator><description>&lt;p&gt;I downloaded the example DFUMaster_Uart example&lt;/p&gt;
&lt;p&gt;1. Open the project file and try to build the code.&lt;/p&gt;
&lt;p&gt;2. I get nrf_log_backend_serial.c - no such file or directory.&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: NRF52832 Firmware Upgrade using Esp8266</title><link>https://devzone.nordicsemi.com/thread/238218?ContentTypeID=1</link><pubDate>Thu, 05 Mar 2020 10:07:58 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:b255b6c8-fd97-4176-b7a3-665d2b5b7688</guid><dc:creator>Hung Bui</dc:creator><description>&lt;p&gt;I have the list of steps, please let me know if you have performed all the steps.&amp;nbsp;&lt;/p&gt;
&lt;p&gt;We can&amp;#39;t review the code just based on &amp;quot;it doesn&amp;#39;t work&amp;quot;.&amp;nbsp;&lt;/p&gt;
&lt;p&gt;You need to debug the bootloader to find the reason.&amp;nbsp;&lt;/p&gt;
&lt;p&gt;What was the issue with the UART DFU master example ? Which error do you have ?&amp;nbsp;&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: NRF52832 Firmware Upgrade using Esp8266</title><link>https://devzone.nordicsemi.com/thread/238165?ContentTypeID=1</link><pubDate>Thu, 05 Mar 2020 06:29:44 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:97f91706-ac84-4832-88b8-552c2aba8d7e</guid><dc:creator>Vaibhav_Bansal</dc:creator><description>&lt;p&gt;Hi&lt;/p&gt;
&lt;p&gt;&lt;/p&gt;
&lt;p&gt;I am trying to implement you code UART DFU Master example, but not able to compile it. So what I did to compare the code with my DFU controller code that I had written in esp8266.&lt;/p&gt;
&lt;p&gt;Both the codes are same.&amp;nbsp;&lt;/p&gt;
&lt;p&gt;I also traced the uart lines using logic analyzer and data tx rx is also good and expected values.&lt;/p&gt;
&lt;p&gt;Still when I send the execution command I am not able to receive any response from the device.&lt;/p&gt;
&lt;p&gt;&lt;/p&gt;
&lt;p&gt;I am sending the .dat file, renamed as init_1.bin file in our server and also compare the data for any type of data corruption. Data is also correct.&lt;/p&gt;
&lt;p&gt;&lt;/p&gt;
&lt;p&gt;Is possible can we have a code review session on this?&amp;nbsp;&amp;nbsp;&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: NRF52832 Firmware Upgrade using Esp8266</title><link>https://devzone.nordicsemi.com/thread/238159?ContentTypeID=1</link><pubDate>Thu, 05 Mar 2020 04:51:42 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:735da1b1-feaa-4c9f-b798-88dce4045475</guid><dc:creator>Vaibhav_Bansal</dc:creator><description>&lt;p&gt;Hi Hung&lt;/p&gt;
&lt;p&gt;I will work on this will let you know the results.&lt;/p&gt;
&lt;p&gt;&lt;/p&gt;
&lt;p&gt;SDK verison of my application is 14.2.&lt;/p&gt;
&lt;p&gt;I am planning to upgrade my device firmware on same version. I had devices deployed in the field with some features that has connectivity over BLE and Wifi. As for firmware upgrade BLE instance and user is not available , and device will work automatically over Wifi only.&amp;nbsp;&lt;/p&gt;
&lt;p&gt;So I want to upgrade the device firmware over Wifi.&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item></channel></rss>