TinyUmbrella has been updated to version 5.10.12 for saving iOS 5.1 SHSH blobs for iPhone 4, iPhone 4S, and iPhone 4 CDMA with the added functionality to save BBTickets (baseband signing ticket). This will help iPhone users to restore to the older baseband if Apple is still signing it. Till now, it wasn’t possible to downgrade the iPhone baseband but the recent update from Notcom insinuates towards the possibility of unlocking iPhone on lower baseband (with saved BBTickets).

As noted by Notcom on his blog The Firmware Umbrella:

Save your BBTickets…

I’m pushing 5.10.12 for iPhone 4, iPhone 4s, and iPhone 4 CDMA users with functionality to save BBTickets for use later on…

TinyUmbrella v5.10.12 to Save iPhone BBTickets

BBTickets and its Significance

The device bootloaders 2.8, 2.13 (baseband or firmware) generate a random number at the time of restoring the device which is sent to Apple en-route to iTunes. Then Apple sends the APTicket / BBTicket SHSH certificate with the number generated which is matched to the number generated on your iPhone. If both the number matches, iTunes prepares the matched certificate and stitches the blobs to the firmware. If the SHSH blobs don’t match the restore process fails and the bootloaders reject the certificate.

iPhone users on iOS 5.1 Build 9B176, who seeks to unlock their device in future, should download the newest TinyUmbrella 5.10.12 and save their SHSH blobs with (APTickets/BBTickets) right away. These backed up tickets will come handy in event of downgrading the baseband after a new software update is released. Without saving baseband signing ticket, downgrade to old ipsw won’t be possible and, you will not be able to restore your device to your desired firmware version and baseband (IPSW file) using iTunes.

To download the latest version of TinyUmbrella, follow the direct links listed below or visit our dedicated download section.

Download TinyUmbrella v5.10.12 for Windows

Download TinyUmbrella v5.10.12 for Mac OS X

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  • Cydiarepo

    tell the fgt ass dragonfly fgt of your site to duck my fuckin dick.. dont make threats on bs posts.. his info was stolin like everyone elses is.. he comes at me again i will find him and kill him.. fuck you and him

  • Simply_bodo

    sorry for asking but when will we be able to downgrade owr 04.11.08 basebands?. we are tired of waiting for an unlock and it cost`s me 160 euros to neverlock

    • Nuwan

      Same here… anyway where you can get unlock for 160 Euro?

      • Simply_bodo

        From a friend that works in a phone service and he told me that because i am stuck on roger canada i have to pau 160 euros and in 20 days my phone will be neverlock, on roger canada is the most expencive neverlocked. I am from Romania

  • Woooytas

    What does it mean? Can i downgrade my baseband from 4.11.08 to older? Ios 5.0.1 iPhone 4?

    • http://cydiablog.com Mike Webb

      Not right now! But you could do it very soon!!

      • Woooytas

        I love you!!!