Backup Your iPhone SHSH – TinyUmbrella
Having backups of your SHSH will also allow you to downgrade to older firmware versions if you have the SHSH for it even if you’ve updated your iPhone’s firmware. The reason the SHSH is needed is because on an iPhone 3GS or higher, Apple’s server must sign the firmware being installed. After a new firmware version is released Apple’s server will stop signing older firmware, rendering it unusable. With your SHSH blobs you’ll be able to generate the signature needed to use an older firmware.
UPDATE – having your SHSH keys for iOS 4.1 will play a huge role in an Untethered jailbreak for iPhone OS4.2 and beyond. Don’t get stuck without an untethered jailbreak! BACK UP YOUR SSH NOW! iPhone OS 4.2 will be released any day now. If you update without doing this you may end up with a tethered jailbreak! Using TinyUmbrella Doesn’t require a jailbreak.
Tethered Jailbreak vs UnTethered Jailbreak
A tethered iPhone jailbreak basically means everytime your device boots you will need to plug it into a computer and jailbreak again to make it start. That means you’re going to do this everytime your iPhone dies or needs to be restarted. An Un-tethered jailbreak will eliminate the need for this. For obvious reasons untethered is very much preferred
This can come in really handy in certain situations where the newer firmware maybe worse or break some functionality that worked in a previous version, yes this happens.
Let’s get started.
For the most part this is really really simple takes merely a minute and doesn’t require your device to be jailbroken.
- Download TinyUmbrella for your OS/
- Run / Open the downloaded TinyUmbrella program
- Plug your iOS device into your computer
- Select your device from the device list
- Click the Save SHSH button