Bricked Plum84 firmware?

[gensou]

I have a Plum 84 EC Pro Ble board and I tried updating the firmware found here https://www.dropbox.com/sh/m89s5wpckcxukol/AABB9SGUcDDiz5WmmpGkAzwba/84%20EC%20PRO%20Ble/V1.1.26?dl=0
Now the board is unresponsive. The factory reset key combo doesn't do anything. he ~ and Print Screen buttons are glowing green but none of the buttons do anything.
When I try to run the KB84 software again I get a "keyboard is not plugged in" message.

What's the probability of permanent damage?

Edit: The keyboard is still detected by Windows and shows in devices as 84EC-S.

[davkol]

Have you checked out the respective thread(s) at Deskthority? There's some relevant tech support.

[1] https://deskthority.net/vendors-f52/plum-mini-84-electrastatic-capacitive-35g-keyboard-pbt-keycap-t12673.html
[2] https://deskthority.net/keyboards-f2/plum-nano75-electrastatic-capacitive-bluetooth-rgb-keyboard-t13845.html

[gensou]

Thanks, I'll try my luck with the user 'mech greenland'.