Hi guys, so I have the fallowing problem. I have to 2 classic cards, one of them is able to open some doors and the other can open the same doors plus a few more that the firs can´t. I was able to copy both of them, emulation works on the first one well but on the second one is only able to work on the normal doors, although it should work on the other doors as well. when I emulate it on the " special " doors it either rejected by the reader ( red LED blinks ) or it doesn´t get detected at all. I can provide the 2 files if anyone is interested. opened them with a hex edditor and they look almost the same, same block are written, I think only the UID is not the same.