For anyone who has problems with their GBAMP and finds this thread, I made a program which fully erases the GBAMP's firmware and rewrites it back to a known stock version.
Originally posted here...
I recently picked up a GBAMP and was super excited to use it. I was told I would be able to play NES games on it if i updated it. I was provided with the update files and when I went to update everything went fine and it updated successfully. The...