In the past, iPhone users could downgrade to the old version of iOS if they were not satisfied after upgrading to the new version of iOS. However, starting from recent generations of iPhone and iOS, Apple has blocked this loophole, and the upgraded iOS cannot be downgraded to the old version. However, now users who want to "downgrade" finally have hope of returning to the old version!The TinyUmbrella tool has been greatly simplified, and it has a dedicated key for saving SHSH blobs. There are already users who have saved iOS 8.1-iOS 8.1.3 for their iPhone 6 Plus. iOS downgrade is back.
Basic introduction
ECID SHSH backup tool TinyUmbrella, the original Firmware Umbrella, is a software used to apply for ECID paired SHSH files. It supports non-jailbroken devices. The latest version has modified ECID and other data detection to make it more reliable.
How to use
In the past, to downgrade, you had to rely on a tool called "TinyUmbrella" to store the "SHSH" file. The way Apple prevents downgrades is that when installing iOS software, you need to contact Apple to confirm that it is an Apple-approved version. But now TinyUmbrella has been rewritten, and the newly launched BETA version supports iOS 8.1.3 and iOS 8.2, and its usage is simpler than before.
TinyUmbrella allows users to save a SHSH file and then use it to create a pre-confirmed iOS upgrade file, so that users do not need to connect to Apple servers to confirm the installation of the iOS system.
1. Back up SHSH files
1. First turn on the iPhone and connect it to your computer through the data cable (you can open iTunes in advance and make sure the connection is successful, then exit iTunes)
2. Click Save My SHSH to start the backup.
2. Restore the corresponding firmware according to the backup SHSH
1. Click Start TSS Servicer in the upper right corner to run (no need to change hosts [just ignore it if you don’t understand], if it has been modified before, you can use 360 Guards to repair it)
2. Start iTunes and restore the relevant firmware corresponding to SHSH.
it works
it works
it works