Blue flashing after bootloader installation

Toniebox Hardware CC3200 (V1, V2)
1

I think I have broken my Toniebox. When I connect it to the power supply, it lights up green for about 1 second and then flashes blue 5 times or more in quick sequence.
How can I restore the backup of my box or is it now completely broken?

I have followed the instructions and created a backup.pin. But I don’t know how to restore it.

2

Bootloader error codes:

3

In my attempt to solve the problem, I deleted the folder from the SD card (sd:/revvox/)
Can I just copy it back on?
And can I somehow read an error log from the box?