I have 4.3.5 jailbroken it wont let me get rid of jailbreak. i want to update ios to 5, but no matter what i try it wont let me do this anyone know how i can upgrade
Doesn't always work this easy. I wish it did.
It's NEVER been as simple as connecting to itunes and "upgrading" if your phone is currently Jailbroken , sorry. You have to edit your Host file, save the Host File and REBOOT........then try upgrading using the correct IPSW file.
When you upgrading to current firmware Apple currently signs, you can just upgrading it thru itune.
If you want to restore/upgrade to a firmware Apple is no longer signing, and you have blob for it, then you will have to go thru hoop to make sure you have TSS server running etc....
I am not sure where the issue is since I have upgrade so many phones/iPads to the latest firmware before jailbreak them with the latest redsn0w 0.9.10b3.