DFU Problem

[Patturn]

Hey. I can't seem to get an 8gb 3G iPhone into DFU mode at all. The phone was at first running ios 4.0 and after many attempts to enter DFU i decided to upgrade to 4.2 just to see would it make any difference. It didn't. I have another identical iPhone that i can get into DFU mode on my very first attempt no problem. Does anybody know what may be causiing this?

[Simon]

Does the home button and power button work properly? Also when you try to enter dfu does it take a screenshot?

[Patturn]

Yeah, home button and power button do as intended. The phone doesn't take a screenshot. The apple logo appears and stays there and im sure it is supposed to disappear, isnt it?

Also, does it make a difference that there is no SIM installed?

[Stray]

Im not 100% sure but can't you use Tiny Umbrella to enter recovery mode.

[Simon]

You can, but recovery is not dfu mode.

Yeah, home button and power button do as intended. The phone doesn't take a screenshot. The apple logo appears and stays there and im sure it is supposed to disappear, isnt it?

Also, does it make a difference that there is no SIM installed?

Ya the apple logo should disappear about the 6-7 second mark when holding both buttons. It doesnt matter if a sim is installed or not.