TinyUmbrella has been a vital tool for many a fugitive. Held a state of device requires a jailbreak to be - have spots, and a little SHSH to downgrade the firmware easily without Apple's request, is also a tool that quickly began to drive in and out of the way DFU armed.
Has the dev behind TinyUmbrella (created as a favor to the public, on the contrary) a tool called TinyCFW in two main target iPad and iPhone 4 users. IPad made for a friend owns a GSM stored for 2 people with a bubble 4.3.3 IOS SHSH to lower the future. Because Apple is not the signature of the firmware, the friend said to downgrade to 4.3.3, which is so far the only version of IOS jailbreak (untethered) was on the Comex PDF exploit JailbreakMe is exposed to 3.0 of the tool. The friend, how many iPad 2 users who try the same process was consistent with an error 1015, which goes hand in hand filled with the dreaded recovery loop.
It is worth mentioning that since TinyCFW was never intended for publication, it's tough as Clint Eastwood beard. Do not expect to work perfectly, and beyond, not to complain if not completely do the job. Sure you are modifying an existing IPSW for iPhone 2 or iPhone 4 in his band at the last update, and also develop an IPSW to use with TinyUmbrella and iTunes, a version of IOS, which again stains SHSH. However, no jailbreak, unlock, and then another, and not protect you from baseband, not work with any device, other than those mentioned above.
TinyCFW GSM only supports version 2 of the iPad and iPhone 4 All other IOS devices are not supported.
iOS 4.3.3 for 4 seconds or iPad iPhone
You will need 2.5 GB of RAM, all with their netbook will probably not be enough this time.
Step 1: Start the application by double clicking on the bottle (for Mac) or run the exe (for Windows), each of which can be found here
Step 2: Next, fill in the application window. You have saved, click the top button and the search for the drops SHSH IPSW.
Step 3: The application will reveal the details of the firmware IPSW and selected as the base band version, and versions of the baseband in order IPSW if you click the second button ...
Step 4: Click "Save Target IPSW" and let TinyCFW effect on you. Once the process is complete, you are using a file with the original name of <your ipsw is <name left. Bbupdate.ipsw.
That's it! Now you can use iTunes (with TinyUmbrella plays a key role, not so good) Restore your iPhone 4 or iPad 2 back to 4.3.3 (or IOS 4 iterations), as long as you have saved past the fall of cases. Make sure the device in DFU mode if you perform the restoration, it will not work.
If you can downgrade back to iOS 4.3.3, then we have the full tutorial here on how to get published in untethered jailbreak 4.3.3 with JailbreakMe IOS.