GNX SEM module not recognise after firmware update

[simmeone]

Hi folks,
after I upgrade the firmware (_GNX_USB_Controller_v2_11_7.vkb) from my GNX SEM module with GNX USB Controller, the module does not work anymore. No LEDs are working, nothing happens Is there a trick to get the module alive again?
I unplugged the USB cable and plug it in again (a short flashing of the blued LED is seen), I switched off my Computer, and restart it... Nothing! Any hints?

Kind regards.

[fallout9]

Please use only stable firmware, 2.115 is the latest. The place you've got 2.117 is for testing only; when it's passing all tests it's getting published as stable.

Open up the back cover, short the 2 pins you'd see on the back of the HID board and plug it to USB while holding the 2 pins in short. Release after a few seconds, run zBootloader and flash back to 2.115.