Hello,

Just jail broken and unlocked an iPhone 3Gs using the latest redsn0w software for my mac. No problems with process of jail breaking but have run into an issue after ultrasn0w unlock. After jailbreak the phone was able to reboot without being tethered. The phone would boot fine with out any problems but you could not use any jailbreak software until tethered boot. When i installed the ultrasn0w unlock the phone would not boot without being tethered. On untethered boot it will just hang on the apple logo!

Any one know the cause of this and if it can be fixed?

Thanks in advance!

Originally Posted by MicroEnviI

Hello,

Just jail broken and unlocked an iPhone 3Gs using the latest redsn0w software for my mac. No problems with process of jail breaking but have run into an issue after ultrasn0w unlock. After jailbreak the phone was able to reboot without being tethered. The phone would boot fine with out any problems but you could not use any jailbreak software until tethered boot. When i installed the ultrasn0w unlock the phone would not boot without being tethered. On untethered boot it will just hang on the apple logo!

Any one know the cause of this and if it can be fixed?

100% normal behaviour.

See: point 3 below, taken from: Dev-Team Blog - Thanksgiving with Apple

Update #2: The notion of a “tethered” jailbreak is pretty new to many people, so here’s a quick rundown on what to expect:

1. If you’re on an iPhone3G, old-bootrom iPhone3GS, or non-MC ipt2g, life is easy. redsn0w installed an untethered jailbreak and so nothing below applies.
2. “Tethered” does not mean you cannot boot at all without PC/Mac assistance. If you have not installed any tweaks that hook into important programs like SpringBoard or CommCenter, your device will actually boot. However, jailbreak programs like Cydia won’t work (and Cydia may still have a white icon). Also, certain built-in apps that had to be moved by Cydia will fail (Safari being the most noticeable example).
3. If you’ve installed MobileSubstrate tweaks that hook into SpringBoard or other important programs, your boot will actually fail (you’ll get stuck at the Apple logo). You need to use redsn0w to “Just boot tethered right now”.

Thanks for pointing this out to me, sorry i over looked this point.

Can you tell me if i remove the ultrasn0w software will the phone be able to boot normally again?

Also can i reinstall the custom iOS firmware without Cydia and the unlock?

Originally Posted by MicroEnviI

Thanks for pointing this out to me, sorry i over looked this point.

Can you tell me if i remove the ultrasn0w software will the phone be able to boot normally again?

Also can i reinstall the custom iOS firmware without Cydia and the unlock?

You need to uninstall mobile substrate, this will also remove ultrasn0w. After the reboot, you should be able to boot "semi-tethered" again.


There is very little point in jailbreaking without Cydia installed. It is technically possible to make a custom iOS firmware without Cydia, however your jailbreak would still be "semi-tethered"

Thanks for all your help, i really need to get into this more! I used to be but recently fallen out of touch with it all. Can you suggest any good sites to read up on recent exploits, news, update and general iPhone geeky-ness? (other the obvious dev team blog, iclarified and hackint0sh)

Originally Posted by MicroEnviI

Thanks for all your help, i really need to get into this more! I used to be but recently fallen out of touch with it all. Can you suggest any good sites to read up on recent exploits, news, update and general iPhone geeky-ness? (other the obvious dev team blog, iclarified and hackint0sh)

Other than twitter, that's all I read - it's enough. I've seen that some of the others here contribute also at modmyi which seems be equally as good as hackint0sh when it comes to iOS - but I personally don't have time to frequent more than one iOS forum.