MCU boot loader

[Rkidechaa]

HI,

I was trying to update firmware on thingy 91 using MCU bootloader. Now when I trying to upload again it is keep showing one error.

Error while probing devices: Error occured when get serial numbers. Errorcode: CouldNotCallFunction (0x9) Lowlevel error: INVALID_OPERATION (fffffffe)

I don't know what went wrong the second time. I did not change anything. I have 2 thingies 91 and both were showing the same error while updating the modem firmware.

With regards,

Rahul Kidecha

[Carl Richard]

Hello, Rahul!

Sorry to hear that you have issues with the Thingy:91. What operating system are you using? Could I also ask what firmware you are trying to flash and if you are using the nRF Connect Programmer app?

Hope we can solve this together!

Best regards,
Carl Richard