I have done just about everything I can think of (which isn't much) short of pressing the restore button in itunes (without holding alt/option to select my IPSW) I would much prefer to save my original Baseband. Any help that would allow me to restore this phone with Redsnow or Pwnage tool would be greatly appreciated. You'll have to go into Pwned DFU with redsnow before attempting the restore, otherwise the baseband will be updated. i Tunes does it thing I am able to select my IPWS, the extracting software "bar" runs across top of i Tunes, then it does it's verify with Apple, and then it stops with Error 21. (My finger tips are about worn off by now....) please respond to me quickly, as I am about to do the DREADED factory restore......I have also received error 1604, and 1600 previously...... please keep all cables away from small children, pets, wives, and loose limbs, where accidental un-plugging can occur during upgrading...... while I still have energy to depress the Power Button.... I guess the problem that I am having is I am not able to turn the phone off while it is plugged in (USB) to the computer. As soon as the phone is plugged in it displays the "i Tunes/USB" logo on the screen.
Tai G provides an i OS 8.4 and 8.3 untethered jailbreak.You’re excited to finally try out the i OS 10/10.3, to sample the new features Apple announced. Yes, you might have been pretty certain that you had ample battery on your device prior to running i OS 10/10.3 upgrade, but let’s make sure we troubleshoot battery first. So, pick up your lightning connector – you can try another lightning connector, port and outlet, just to be triple sure – plug into your charging port and into a power source and leave it for some minutes, preferable an hour. Whether it’s just not turning on, or it doesn’t boot, or the screen is just frozen, a hard reset can be the emphatic answer.You’ve painstakingly done the upgrade and wait for your phone to reboot so you can see for yourselves what Apple CEO described back in June. It might just be some bad data bits that needs to leave the device’s memory, and why not if it might work for you.Check @Pangu Team, @taig_jailbreak, @saurik, and /r/jailbreak for news and updates.You can use Cydia Impactor if you need to un-jailbreak an 8.1-8.4 device without restoring. I was in the process of firmware upgrade of my iphone 4 when the USB cable was accidentally pulled out of the phone.To chroot into your hard drive installation, first boot off a live cd.