I tried a known good 32 and 8 gb that were tested and fully formatted, and they did not work. One commenter mentioned going as small as 4 gb. It’s hard to even get a card nowadays under 32 gb. I managed to get a 4 gb card on ebay but haven’t tried it yet. I’m kind of doubtful at this point that anything will work with my v3 cams. There are a couple of guys on here who it did work for that will bash anyone that claims it doesn’t work, accusing you of doing it wrong. [Mod Edit]
MOD NOTE: Post edited to conform to the Community Guidelines.