Guides

Are you missing some key jailbreak tweaks now that you've updated your iPhone 4 or 3GS to iOS 5 firmware? Already tired of dealing with all of the shortcomings in iOS 5 notification center? Luckily if you have saved your SHSH blobs you can easily downgrade and return your iPhone to a jailbroken state (and reinstall LockInfo!)

In order to downgrade you must have saved SHSH blobs. Pictured above are how saved SHSH files appear for each firmware version in Cydia, when they are saved to Saurik's server. Follow these steps to downgrade to earlier firmware, including iOS 4.3.3 for an untethered jailbreak with JailbreakMe.

The long awaited untethered jailbreak for iOS 4.2.1 is here, albeit in limited fashion. The instructions below pertain to Redsn0w 0.9.7b1, a beta release of the so-called "backup plan" untethered jailbreak. This release is not the final release and, being a beta, requires a bit more effort than the eventual final release should. This jailbreak is also limited to the iPhone 4, iPad and iPod Touch 4G.

The following provides step-by-step instructions on how to jailbreak your iPhone (or other iOS device) using Redsn0w 0.9.7b1.

Some unlucky iPhone users got the short end of the battery life after updating to iOS 4.1. Users have reported battery life issues among other problems with prior firmware updates (remember iPhone OS 3.1?) but now some running iOS 4.1 are seeing their battery percentage drop to zero within hours.

Online discussion forums are hopping with activity from iPhone 4 and iPhone 3GS users complaining of shortened battery life and warm phones running iOS 4.1. Some reports have suggested that errant processes are running in the background constantly and draining the battery power. Bugs in the modem firmware, tethering software, and Game Center have all been cited as possible causes of the issue.

Sometimes for whatever reason an iPhone firmware upgrade ends up being counterproductive or causes issues with your individual phone. Maybe you're experiencing battery life problems with iOS 4.1 on your iPhone 3GS. Updates can even happen by accident with the wrong click of a button, wiping a jailbroken device.

If you have already saved your SHSH files for one or more earlier firmware versions on Saurik's server, you can follow these steps to downgrade from iOS 4.1.

Now that Geohot has released the blackra1n RC3 jailbreaking tool, activating tethering on an iPhone 3G or 3GS is a snap. Many international users already have tethering, meaning they can share their iPhone data connection with a computer. AT&T does not offer this option in the US.

Fortunately it's never been simpler to tether if your iPhone is running the latest firmware (3.1.2). Follow these steps to activate tethering, just keep in mind you are breaking all kinds of agreements with AT&T and Apple in the process.