I'm new to the forums and I've come to ask for a bit of help. Please forgive me if this has already been solved elsewhere... i've searched extensively already. Also forgive my bad english
I've been asked by a friend to simunlock his HTC Desire HD. He got it from another friend and the device is already rooted and with a ROM which is not the original one. I assume it's not simunlocked because, when booted with a SIM card in it, it asks for a code to unlock the network.
I've read many methods for unlocking the phone, but all of them guide you through the whole process of rooting, flashing a rom, etc. And most of them are not compatible with all firmware, which scares me a bit because I do not know which was the original firmware of this particular phone. I've tried a couple of methods with ADB and Ultimate Multi Tool, to no avail.
This is the info in 'About phone':
HTC Desire HD
Thu Jun 9 00: 16:24 CEST 2011
So... what do you think should I do?