Firmware upgrade question

[juliojgd]

I am wondering if firmware upgrade is possible in GK6X keyboards. I own a GK68XS and a GK61XS.
As I can see in the "GK6X.exe" run, my GK68XS has Firmware v1.19 and GK61XS has firmware 1.23 but there is no option or button to perform a firmware upgrade in original software "GK6XPluss Driver" neither in this GK6X program ( https://github.com/pixeltris/GK6X/blob/master/GK6X/Program.cs options does not include upgrading firmware)
Is the firmware upgrade made automatically by "GK6XPluss Driver" software without user interaction? Or the firmware is never upgraded in these boards?

PD: The reason for asking this is that I am suffering from occasional "stuck keypresses" when using the keyboard with Bluetooth. It is not a switch failure as I have to switch off the keyboard (Fn+Tab for 5 seconds), wait some 10 seconds and switch it on again (FN+Tab) to make the keyboard work again. If I do not switch off and on, the keyboard does not register any keypress after the stuck one.
I am hoping that this stuck keypresses shall be fixed in upcoming firmware releases, if the firmware is upgradeable at all!

[pixeltris]

I think GK64 had a firmware update file, but I haven't seen anything for any GK6X keyboards since. There is a protocol for sending firmware files to the keyboard, but isn't implemented in this repo.

https://github.com/wgwoods/gk64-python is the analysis of the GK64 firmware update. It includes code for sending firmware to the keyboard https://github.com/wgwoods/gk64-python/blob/master/gk64.py

[juliojgd]

Thanks for your answer, I haven't been able to find anything related to fìrmware update in the original software either :(