With the big Apple iPad 3 announcement event taking place right this moment we’re turning our attention to iOS 5.1. It seems very probable that Apple’s latest operating system will be with us shortly and if you’re one of the many who likes to jailbreak their device then this is a warning to refrain from downloading iOS 5.1.
If you’re an iPhone 4S owner this warning is particularly relevant and iDownloadBlog sourced from the Dev Team has given some great advice for different devices and iOS 5.1. First off when the new OS reaches Apple servers and arrives on iTunes, Apple will cease to sign iOS 5.1 SHSH blobs. iPhone 4S jailbreaker owners should refrain from downloading the firmware update because once the 5.0.1 signing window closes you will not be able to go back to iOS 5.0.1 (saving SHSH blobs will make no difference in this case).
Moving on to the iPad 2, owners with 4.x hashes can downgrade to 4.x but as with the iPhone 4S you won’t be able to obtain 5.0.1 when the signing window is closed. Again, even if you saved 5.0.1 SHSH blobs that is irrelevant to this). For devices previous to the iPad 2 downgrade to any version but ensure that you have saved SHSH blobs for the version involved. To bypass the downgrade restriction the guidelines are to use geohot’s limera1n exploit using tools such as redsn0w to access ‘pwned DFU mode.’
Ultimately if you want to safeguard your iOS device jailbreak save SHSH blobs and keep away from iOS 5.1 as you may lose your jailbreak. In fact we’re following the iPad 3 event right now and have just heard that iOS 5.1 is indeed starting to roll out from today so don’t be tempted! Are you an amateur or veteran jailbreaker and if so will you be protecting your jailbreak? Maybe you have further advice you’d like to share with our readers?