Hello,
I use to open my parking lot door with a MiFare Classic 1k and already extracted the A key for section 1. Jut section 0 and 1 are in use. With Flipper Zero I can emulate the card and the door opens. I wrote the content via NFC magic to a magic tag and verified it with my Flipper device. Also compared with my smartphone and MiFare Classic Tool that both dumps (original card and magic tag) are identical. Section B is missing its key but it already works.
Just one thing is different as I noticed:
SAK of the original card is 08 and the magic tag has 88. I read about there somewhere what the difference is but cannot find the article any more.
Any ideas what the problem might be?