i got my 3g at the ebay and its already unlocked, it is 4.1 and i want to update it to 4.2.1 because i want to try if i can use wifi, in 4.1 i cant use wifi so i thought that if i update it i could use wifi, when im updating to 4.2.1 it gets stuck at the recovery mode so i search another way to update it to 4.2.1, by the way i think the hold key is broken so im using dfu mode with the help of redsnows dfu ipsw, in the instructions that i found the phone needs to be in dfu mode in itunes and restore it with a custom 4.2.1 ipsw, while restoring it stuck and i checked the status of my phone in redsnow it was in wtf mode, i removed the wtf mode using redsnow and it continued until it reboot, after the reboot my phone i stucked on the apple logo, i cant turn it off and i cant go to recovery mode, i turned it off by opening my phone and removed the power and now it wont turn on even if i charge it