Yes now you can revert back your iPhone 3GS firmware 3.1 to firmware 3.0. Previously we shared method to downgrade your iPhone firmware from 3.1 to 3.0.1, however this time Jay Freeman found a way to downgrade from firmware 3.1 to 3.0. Jay Freeman is the developer behind the well-known Cydia store for iPhone. Note that the process below will only work for those who have saved their SHSH to Cydia Server. You may read more about SSH from this blog post by Saurik. This process will downgrade your iPhone firmware from 3.1 to 3.0 but you baseband firmware will not be downgraded which means you won’t be able to unlock it for now.

Remember the hack we shared recently to manually enable Push Notifications on Jailbroken iPhones running OS 3.0? It did work but you will have to agree that the procedure was a little difficult and long to follow. So to your delight, we have discovered an app in Cydia that would fix Push Notifications on your iPhone instantly. Its called Push Fix and all you need to do is install the app, no more tutorials or hacks to follow.

Now for the users who are in contract with AT&T, enabling the new Push Notifications feature on their new iPhone OS 3.0 won’t be much of a problem. But for those with an unlocked iPhone, this needs to be hacked in order to be used.
As always, The iPhone Dev Team has cooked up something and come up with a way to enable Push Notifications on unlocked iPhone 3.0 as mentioned in one of their Twitter status.

Our blog is committed at bringing you the best and that’s exactly the reason that we first test, analyze and observe the results of the tools we share.
Apple is once-again charging iPod Touch users with a fee of $9.99 for firmware 3.0 upgrade but we have yet again come up with a hack to help all iPod Touch users do it for free and what makes our hack different is, that it has been tested on a real iPod Touch and actually works for both iPod Touch 1G and 2G.

At last, after a two day wait, the iPhone Dev Team has finally managed to crack open the iPhone firmware 3.0 and has now released the PwnageTool to Jailbreak and Unlock the iPhone and iPod Touch.
Sadly, iPhone 3G users will still have to wait till Ultrasnow is pushed to the Cydia repo so until now only iPhone 2G users will be able to Jailbreak and Unlock their device on the iPhone firmware 3.0. Also the Pwnage Tool can be used by 1st Gen iPod Touch to Jailbreak the device.

Its here! the new iPhone 3.0 firmware by Apple that will bring wonders to the iPhone and iPod Touch. The update was pushed by Apple a couple of minutes ago and users all around the world are now able to download it to their iPhone and iPod Touch devices. Though, we are still waiting for a word from iPhone Dev Team so the users running and unlocked iPhone should not update their device yet.

In just a couple of minutes, Apple is about to release the new iPhone firmware 3.0 for all iPhone and iPod Touchdevices but the interesting part is that the iPhone Dev Team has already managed to jailbreak and unlock the new firmware.