Geeetech

Hi! My motherboard of A10M is broken (i broak it by error.My mistake). I replace it with Arduino mega and ramps. I Load the Marlin 1.1.8 into Arduino ad it is ok. But if i load the file HEX i founded in Geeetech dowload pages ,nothing happens. I uploaded with cura and seems all ok. But on displaty appares some strange caracters and Arduino going frosen. I must to upload Marlin again. Can you hep,me? Thank you very much!
This appares if i upload the firmware in Geeetech download page:

Hello, the motherboard you are using cannot use our firmware.
You can use the modified Marlin firmware on RAMPS 1.4.
choose a name from boards.h that match your settings.
Can be downloaded on the marlin official website