How to: Downgrade iOS 4 to 3.1.3/3.1.2 using TinyUmbrella How to: Save SHSH blobs with TinyUmbrella (added Support for iOS 4.3.4 and iOS 4.2.9) (added iOS 4.3.5 and iPhone 4 Baseband Updates)

iPhone 3G and older devices including iPod Touch (Non-MC) users do not need to save SHSH blobs.

If Cydia’s TSS server is down, your only option will be to use TinyUmbrella for restoring through iTunes.

TinyUmbrella saves the file locally AND sends the request to Cydia so Cydia will have the SHSH as well.

It does not matter what firmware version is on the device TinyUmbrella will get the currently signed firmware by default.

You can save SHSH blobs for iOS even if you’re runnin an older fimrware.

TinyUmbrella can now save iOS SHSH regardless of whether your device is jailbroken.

Once Apple has stopped signing firmware SHSH requests for a firmware version there is no way to get your SHSH for that particular version.

Apple stops signing firmware SHSH once a new firmware is out.

With TinyTSS + the shsh blob file(s) you obtained with Umbrella, you will be able to restore to the version of those shsh files forever! TinyUmbrella 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. 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. For those who don’t know what the Firmware Umbrella and TinyTSS are, check the details below along with the Download Links… TinyUmbrella is a unified version of FirmwareUmbrella and TinyTSS.

Notcom has released TinyUmbrella to save SHSH blobs for iPhone, iPad and iPod Touch.

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