DFU failed after 1st image on SD+BL+APP, and need reboot iphone to dfu application only

[sam]

update SD+BL+APP from sdk12.2.0 to sdk14.2.0 , hang at trying to reconnect after loading the 1st image out of 2 on NRF52832. need reboot iphone and DFU application only to dfu.

[sam]

sorry，the video upload failed

[Gabriel C.]

Hi I am having more or less the same issue. But my app is able to reconnect after loading the first image but it is stuck on:

...

Verbose: Notifications enabled for 8EC90001-F315-4F60-9FB8-838830DAEA50

Application: DFU Control Point notifications enabled

Application: Writing Read object information command...

Verbose: Writing to characteristic 8EC90001-F315-4F60-9FB8-838830DAEA50...

Debug: peripheral.writeValue(0x0601, forCharacteristic: 8EC90001-F315-4F60-9FB8-838830DAEA50, type: WithResponse)

Were you able to fix it? No help yet?

[bjorn-spockeli]

Hi Sam, 

is the NRF52832 advertising as DFUTarg after the 1st images has been transferred? Does the SDK v12.2.0 bootloader retain the bonding information and application data through the DFU process, i.e. is DFU_APP_DATA_RESERVED set to 3*CODE_PAGE_SIZE ? 

Gabriel C.: Could you post the log output from the nRF52832 device ?

[Gabriel C.]

Hi bjorn-spockeli, check my thread here: https://devzone.nordicsemi.com/f/nordic-q-a/38867/dfu-update-with-zip-sd-bl-app-fails-on-writing-characteristic-on-second-image-upload-ios

Thanks,