any phone flashers?

[jonbearsmt 919]

i picked up a motorolla backflip, that is flashed for tmobile, but when i put in my t mobile sims it ask for a sim unlock net work pin.

i looked all over the internet, and found a few codes but none worked, it gives me 10 trys then locks permently from what i understand i have already used 4 of the 10,

any help would be great thanks guys,

[bassahaulic 155]

i picked up a motorolla backflip, that is flashed for tmobile, but when i put in my t mobile sims it ask for a sim unlock net work pin.

i looked all over the internet, and found a few codes but none worked, it gives me 10 trys then locks permently from what i understand i have already used 4 of the 10,

any help would be great thanks guys,

You picked the worst phone ever to try to mess with. lol

Make sure it's actually modded for AT&T, it's not easy to get into the bootloader to change that.