Did you solved your problem meanwhile?
If no, there is a possibility, if the Gm1210 has a USB-Port or a sd-Card Slot. English isn't my motherlanguage, so I didn't recognise by searching in Google for your device if there is any Slot available.
But I think, it shall be possible to put files into the device. If it is so, you can change in your backup the executable ***.exe with a suitable totalcommander.exe. But caution, there are many things to respect.
If you still have your Problem, you can write me an maybe we can resolve your device. But all you do on your device will be at your own responsibility!!