Thingy 52 DFU Error

[Afnan Liaqat]

Hi Dev Team,

I would appreciate if you can help me sort out the errors that I am getting when doing a DFU OTA using the 52 Dev Kit to the Thingy. I basically followed all the steps in this guide: https://devzone.nordicsemi.com/b/blog/posts/getting-started-with-nordics-secure-dfu-bootloader and now I'm not being able to move ahead.

Here is the error: "When writing 'EXECUTE' command to Control Point Characteristic of DFU Target: Operation code 4 (EXECUTE) failed on DFU Target. Result code 11 (EXTENDED_ERROR) Extended error code 5 (FW_VERSION_FAILURE)"

Any help is appreciated.

Thanks in advance!

[Hung Bui]

Hi Afnan, 

 

Could you let me know how do you do DFU for the Thingy ? How exactly you connect the Thingy with nRF52 Devkit ? What's running on the DevKit ? 

Have you flashed the Thingy with your own bootloader ? 

Which firmware version you assigned to your current application ? 

Note that if you use the default bootloader, you won't be able to do DFU update as you would need our private keys to sign the .zip package. 

The error you quoted telling that there is an issue with the version of the application you are going update. Note that the new application 's version have to higher or equal than the version of the current application's version on the chip. 

[Afnan Liaqat]

Hi Hung,

I put Thingy into Boot mode and connected it with the Dev Kit using nrf Connect studio. Tried to DFU on the phone aswell using the zip file we generated.

We were trying to flash the Thingy with our own bootloader (generated our own private key aswell).

The fw version on the Thingy is 2.1.0 right now and we assigned version 3 for ours.

[Hung Bui]

Have you flashed the Thingy with your own bootloader ? 

How did you flash the bootloader ?