I am having a very similar issue. I can send sysex to my mk1 E! GM dx7 and the LED turns to a red dot like its receiving. When the dump is done the patches remain unchanged as the corrupted patches. I can even initialize a patch but I can't store it. When I try the patch reverts back to the corrupte...

Hello! :D Before you think this is an old topic and has been answered before...believe me I have looked everywhere and cannot find what is wrong with my DX7. I am trying to restore patches on my modded E! Grey Matter mk1 DX7. I bought it cheap and was told it just needed a new battery. I replaced th...