https://devzone.nordicsemi.com/f/nordic-q-a/11053/dfu-error-remote-dfu-invalid-statusHi, platform info: SDK 9.0, NRF51822, SD:s110_nrf51_8.0.0, Master Control Panel(android):2.0.0 We use eample dual_bank_ble_s110 under dfu/bootaloader/pca10028/ of SDK as our bootload. we changed nothing bug memory layout as follows: IROM1en-USTelligent Community 13Mon, 28 Dec 2015 07:56:07 GMThttps://devzone.nordicsemi.com/thread/41318?ContentTypeID=1Mon, 28 Dec 2015 07:56:07 GMT137ad170-7792-4731-bb38-c0d22fbe4515:70165351-6691-4046-a055-aba684928515peter<pre><code>Hi: Here is the log info detail: Conneted to ED:E3:2D:17:A3:F8 Services Discovered Disconnected [DFU] Image file opend(19884 bytes in total) [DFU] Connected Services discovered [DFU] Notifications enabled [DFU] Data written to 00001531-1212-efde-1523-785feabcd123,value(0x):01-04 [DFU]DFU Start send(Op Code:1,Upload Mode=4) [DFU] Firmware image size sent[0b,0b,19884b] [DFU] Received Read Response from 00001531-1212-efde-1523-785feabcd123,value(0x)10-01-01 [DFU]Response received (Op code:1 Status:1) [DFU] Data written to 00001531-1212-efde-1523-785feabcd123,value(0x):08-0A-00 [DFU] Packet Receipt Notif Req[Op Code 8) sent (vlaue:10) [DFU] Data written to 00001531-1212-efde-1523-785feabcd123, value(0x):03 [DFU] Receive firmware image request sent [DFU] Starting upload [DFU] Received Read Response from 00001531-1212-efde-1523-785feabcd123,value(0x):10-03-02 [DFU] Upload completed in 107ms [DFU] Received Read Response from 00001531-1212-efde-1523-785feabcd123,vaue(0x):10-03-02 [DFU]Response received(Op Code:3 Status:2) [DFU] Received Read Response from 00001531-1212-efde-1523-785feabcd123,value(0x):10-03-02 [DFU] Remote DFU error: REMOTE DFU INVALID STATE [DFU] Received Read Response from 00001531-1212-efde-1523-785feabcd123,value(0x):10-03-02 [DFU] Received Read Response from 00001531-1212-efde-1523-785feabcd123,value(0x):10-03-02 [DFU] Received Read Response from 00001531-1212-efde-1523-785feabcd123,value(0x):10-03-02 [DFU] Received Read Response from 00001531-1212-efde-1523-785feabcd123,value(0x):10-03-02 [DFU] Received Read Response from 00001531-1212-efde-1523-785feabcd123,value(0x):10-03-02 [DFU] Received Read Response from 00001531-1212-efde-1523-785feabcd123,value(0x):10-03-02 [DFU] Received Read Response from 00001531-1212-efde-1523-785feabcd123,value(0x):10-03-02 [DFU] Reset reques sent [DFU] Received Read Response from 00001531-1212-efde-1523-785feabcd123,value(0x):10-10-03 [DFU]Notifications disabled [DFU]Disconnected [DFU]Services Discovered [DFU]Disconnected </code></pre><div style="clear:both;"></div>