Power Profile Kit2 reflash the firmware

Hi

My PPK2 was accidentally flashed by the nRFConnect's "Bluetooth Low Energy" app and then it bricked. 

PPK2 then could not be detected by "Power Profiler", even  "Programmer" could not detect it. 

I have also tried to  use JTAG on the PPK2 connected via the DEBUG OUT of a NRF52840-DK, but it seems it could not be flashed through it and get the following error:

08:56:09.301
Recovering Application core
08:56:09.302
Recovering Application core 0%
08:56:29.443
Failed to recovering application core core. Error: [object Object], message: Batch task recover failed, [jlink] RECOVER_FAILED
08:56:29.685
Error: Failed with exit code 1. One or more batch tasks failed: - [jlink] RECOVER_FAILED, code: Nrfjlink. Message: Batch task recover failed, [jlink] RECOVER_FAILED.
What could you advise to recover the PPK2?
Thank you.
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