https://devzone.nordicsemi.com/f/nordic-q-a/22591/use-nrftoolbox-dfu-success-but-it-didn-t-workOTA problem： My hardware is 51822qfaa . This my bootloader: nRF51_SDK_10.0.0_dc26b5e.rar location: nRF51_SDK_10.0.0_dc26b5e\examples\dfu\bootloader\pca10028\dual_bank_ble_s110\arm4 This my application : MOVE_SDK_100524(封装lib).rar locationen-USTelligent Community 13Wed, 07 Jun 2017 03:45:19 GMThttps://devzone.nordicsemi.com/thread/88865?ContentTypeID=1Wed, 07 Jun 2017 03:45:19 GMT137ad170-7792-4731-bb38-c0d22fbe4515:799d4331-fb9e-4693-b769-4cc452e94394RK<p>dupe of <a href="https://devzone.nordicsemi.com/question/148947/ota-success-but-it-didnt-work/">devzone.nordicsemi.com/.../</a></p><div style="clear:both;"></div>