DFU not working for me

[Michael Wang Wenco]

Hi,

my firmware works fine, but when I tried to do DFU using the master control apk, it would get to the download screen and then quit.

This is the text: DFU version number read: 0.1 DFU Application with buttonless update found DFU Notification enabled DFU Jup to bootloader sent (op Code = 1, Uplod Mode = 4) DFU Disconnected by the remote device DFU Image file opened (24756 bytes in total) DFU connection failed (0x85). GATT error.

[Hung Bui]

Hi Michael,

Please edit your question and add following information:

• The SDK version you use

• The step by step process of your testing , what do you flash first, second , etc. When do you flash the bootloader. How do you create your image .zip file (including .hex and .dat file)

• Have you tried to do DFU with our provided example .zip file included when you install the app on the phone ?

• Have you bonded the device with the phone ? Could you try to unbond, then turn off and on Bluetooth and test again ?

[Michael Wang Wenco]

SoftDevice : S110 7.1

SDK 7.2

have set IS_SRVC_CHANGED_CHARACT_PRESENT 0, is disable in bootload and app ,can not changed,because the goods have saled out. can we do OTA by disable IS_SRVC_CHANGED_CHARACT_PRESENT nrf toolbox 1.4

[Hung Bui]

If IS_SRVC_CHANGED_CHARACT_PRESENT is set to 0, bootloader only works, if on the phone the user delete bond information, then turn off and on Bluetooth to clear the cache.