after unlocking with anysim 1.1.2 when I take the ATT sim card out and put the T-Mobile one in it says different simcard detected connect to I tunes and there is no signal no nothing, how do I fix this?

its because you've ACTIVATED the phone using iTunes, rather than using fake activation. What version of the frmware are you running - 1.1.1? If so restore back to 1.1.1, and then activate using *#307# procedure.... you won't need to run anysim again either.

it is on 1.1.1 with the new modem firmware im restoring the firmware now, I wont have to do anysim again, but will it need to be rejailbroken?

also when I redo this should I have the T-mobile sim in or the ATT one