Got a new 32gb SD card today. Put in the it 550D and it tells me card not insert or format the card.
Put the old 16g /ML and it works. Put the 32 gb into my wifes 500d which has never had ML on it, and it works fine.
Do I need to uninstall ML for my 550D?
Took a bright light and very long needle and push something just in front of upper pin. It snapped back and bingo. Put the new 32gb card in and it worked.