Hello everyone,
I have an aftermarket T5 Linux 12.3" (1920x720) digital cluster installed in my Opel Astra J.
The software version on my device is: GM@20250826 r37782.
Problem: there is no Polish language option in the menu.
The seller refuses to provide me with any firmware update.
Does anyone here have an update.zip / .bin / .img for this version (or a compatible newer one) that includes Polish language?
Even a Google Drive/Mega link would be amazing.
I will be very grateful for any help.

I have an aftermarket T5 Linux 12.3" (1920x720) digital cluster installed in my Opel Astra J.
The software version on my device is: GM@20250826 r37782.
Problem: there is no Polish language option in the menu.
The seller refuses to provide me with any firmware update.
Even a Google Drive/Mega link would be amazing.
I will be very grateful for any help.
