You'll need to re-upload the factory firmware. I think I saw someone uploaded it 3rd party in M5Burner. If not, I ripped a clean copy of my firmware and I'll share it tomorrow. Just click "ALL" and then search "cardputer" in the search box on the M5Burner app.
Posts made by 4x0nn
RE: Cardputer display disabled after uploading sample Display code from Github