Semaphore is working on an update to TinyUmbrella that will allow users to restore their iDevices without iTunes.
I've been working on a new and improved version of TinyUmbrella that will, among other things, allow you to restore your iDevice without iTunes. With the holiday season and work, this will take me a bit to get working the way I want it. I appreciate your patience and your support. You guys are awesome :) No ETAs yet but I'll post updates here and on twitter.
Semaphore explains that this means bypassing shsh checks will be possible for devices that can be exploited by limera1n (basically all devices available now) and the steaksauce exploit for the mc 2g ipod touch.
You will always be able to install a custom firmware (or stock firmware) following these directions.
1. Enter DFU
2. Run the Exploit
3. Wait for the White Screen
4. Restore the ipsw of your choice.
Some changes to the ipsw will be required. We will post more information as it becomes available.