Device returned error after sending init packet (error 6)

[licl1008]

This problem didn't appear every time when I upgrade firmware. If I restart my app again, sometime the SDK can works well.

Anyone can help? I'm use SDK in Android, Legacy DFU. Thks a lot.

[licl1008]

By the way, for the test, I always upgrade same firmware file to a device again and again. It has effects on this error?

[Hung Bui]

Hi Licl,

Can you capture a sniffer trace ?

Which SDK version are you testing with ? Have you modified anything in the bootloader ? Have you tried to update using our example .zip file included in the app on Android (inside NordicSemiconductor folder)

You shouldn't have any problem updating the same firmware.