You can visit the iJailbreak Downloads Section and download the latest version of TinyUmbrella. iJailbreak also maintains a downloads section that contains the latest version of TinyUmbrella. TinyUmbrella is maintained by iOS hacker and developer, NotCom (Semaphore). As such you can always find the latest version of TinyUmbrella and beta from his website. You cannot do anything else with it except save the SHSH blobs. Therefore, a new version of TinyUmbrella was released earlier this year, which allows you to save your SHSH blobs. However, Semaphore, the developer behind TinyUmbrella, believes that the SHSH blobs will become useful again in the future. At present, TinyUmbrella is pretty much useless, as it cannot be used to downgrade your iPhone, iPod Touch, iPad anymore.Īpple made it impossible for SHSH blobs to be used while downgrading or restoring to an unsigned firmware ever since iOS 5.x. If you’re still rocking an iPhone 4, you can use TinyUmbrella to preserve the baseband and unlock. What are SHSH blobs? Well, these are unique to every iOS device (iPhone, iPad, iPod Touch, Apple TV), like a signature, and come in handy when dowgrading or restoring to a firmware that isn’t signed by Apple anymore. When iTunes verifies the firmware restore for the devices listed below, it checks if you are allowed to restore to the version you are requesting.TinyUmbrella is the go to tool for jailbroken and non-jailbroken iOS devices when it comes to saving SHSH blobs. TinyTSS is a small java app that acts as your very own signature service. It saves SHSH signatures for your device received from the Apple server and let to downgrade OS indefinitely. Apple stops signing older firmwares once a new one is out.įirmwareUmbrella sends the same exact request that iTunes sends Apple when requesting the signatures for your device to be restored.
If the signature does not match, the device raises an error and the restore process stops. If the signature matches then the restore process can continue. Your device checks the information and verifies the signature (making sure it really came from Apple because it CANNOT be forged as the encryption is very high). iTunes packages up this valuable information and sends it to your device. Apple takes the firmware version files and combines them with your ECID and generates a hash that ONLY APPLE can generate. It is signed with a unique id (ECID) that only your device has. See, the firmware is now signed for the below devices.
The way they stop you is basically by a simple response that iTunes receives when you try to restore the firmware of your choosing. Once you ‘upgrade’ they don’t let you downgrade. When you try to restore an older firmware on the devices listed below, Apple won’t let you do that.
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