Updating iphone firmware without itunes
Some have seen success afterwards by doing the downgrade from DFU mode instead of the normal Recovery mode. This is caused by a failure to match the Baseband Nonce currently in memory to the nonce returned in the Baseband Firmware SHSH blob.
If you back up your i Phone to i Tunes, you’ll need to connect your i Phone to your computer at home to retrieve your data.
This occurs when you try to downgrade your device's baseband.
This error is common when downgrading i Phones and 3G i Pads.
If your i Phone is stuck on the connect to i Tunes logo after updating to i OS 10, it means that the software update started but didn’t finish, so your i Phone can’t turn back on. Yes, it’s a serious software issue — but almost all software issues can be fixed at home.
I’ll show you how — and what to do if the initial restore process fails.