Is your device running on iOS 5? and you love much the old version compared to your present iOS version? Well downgrading is the best option for you, using TinyCFW, users can now downgrade their device running on iOS 5.
Maybe this is your very first time to hear this tool, basically TinyCFW is a downgrading tool by TinyUmbrella-creator NotCom, with saved SHSH blobs, you can downgrade your iPhone 4 or iPad to OS 4.3.3 and enjoy the untethered jailbreak
Here are the message of NotCom.

“TinyCFW is a simple tool I put together for a friend of mine. He has an iPad 2 GSM and has his 4.3.3 SHSH but since Apple is no longer signing 4.3.3, it isn’t possible to downgrade to 4.3.3 without getting stuck in a 1015 recovery loop.”

- It will modify an existing IPSW for an iPad 2 GSM/CDMA or iPhone 4 GSM/CDMA

- It WILL modify the IPSW to update your baseband to the latest

- It will create an IPSW that you can use with TinyUmbrella AND iTunes to restore to a version of iOS that you have SHSHs for

- It is primarily for iPad 2 with a baseband OR iPhone 4.

Some few notes to remember, when downgrading SHSH Blobs is used, it means without SHSH blobs no downgrade happens unless you are using tethered downgrade.

Not many people are using this tool but the thing here is possibly a lot of people will downgrade their device because Untethered Jailbreak for iOS 5 has not yet arrived however why not to give a shot in this tool? and also the question here is when is the Untethered Jailbreak arrive? people are waiting and excited for their jailbreak and hope this will be released as soon as possible.

To download TinyCFW, you can use this link and for more information about this tool, use this link.