Is it Possible to Downgrade Phone 4 From iOS 5 Back to iOS 4.3.3?
Hi to all, just want to ask if someone here has managed to successfully downgrade iPhone 4 from iOS 5 to iOS 4.3.3 using TinyUmbrella? I have iPhone 4 and iOS 4.3.3 SHSH blobs saved, but everytime I try to downgrade, I always end up with various iTunes errors. Thanks.
Asked by: Kris fromMesquite, Texas
Hello Kris, downgrading an iPhone (iPhone 4 [GSM and CDMA] and iPhone 3GS), iPad 1, and iPod Touch (iPod Touch 4G and iPod Touch 3G) from iOS 5 / iOS 5.0.1
back to iOS 4.3.x or iOS 4.2.x is possible as long as you have saved SHSH blobs. By the way, what kind of error did you get when downgrading? Well, if you were getting iTunes error 3194, you can easily bypass this by tweaking the HOSTS file of your iTunes directly on your Mac or PC. If you need guide on how to do this, then you can check this tutorial
on how to bypass iTunes error
3194. On the other hand, if you were getting iTunes error 1600 / 1601 / 1603 / 1604 when downgrading, then you will need to put your iPhone in Pwned DFU mode to bypass this error using iREB RC4. If you aren’t familiar with the steps, then the step-by-step guide on how to use iREB RC4 can be found on this blog post
Now, just to make sure, you can refer on our step-by-step guide posted here on how to downgrade iPhone from iOS 5 back to iOS 4.3.x but before you proceed, please ensure that you are connected to a high-speed Internet to eliminate various errors while downgrading your iOS device. That’s it! Good luck...