I flash and rebranding an use a lot of different SIM cards, also ATT cards and nothing happens, nothing can pass that loop of PUK.
Thinking in something about the software.
I dont know whats wrong, but i waste my money, i bought IMEI Unlock with PUK code for the phone, but nothings helps. So sorry for me, but for new users, listen to my words, dont waste your money in this phone on Internet, if your carrier sells you, is okay, but dont buy this phone on Internet, because you dont know what do you get.
EDIT: Please if somebody knows some trick to do...i trying everthing from debranding, to use nodo, to upgrade or use hacks, and i have imei and unblock imei codes, puk codes from and for the phone...the phone works flaweslly, and its new.
I'll be aprecciated a lot, or pay for a real solution if is possible!
(No rebel sim or something)