If you've updated your iPhone 3GS to iOS 5 or 5.0.1 and lost your unlock we can help you get it back. The actual jailbreak will be tethered but you'll still be able to unlock and continue using your device in the mean time until an untethered jailbreak solution is released. iPhone 4 and iPhone 4S users should steer clear of this as it will not work.
If you're currently running iOS 5.0.1, you can jailbreak via RedSn0w 0.9.9b8. This one is also tethered like the previous beta versions of RedSn0w for iOS 5. It's also worth noting that unlockers should stay away from this one unless they're okay with being tethered. iPhone 4 users should stay away from any newer stock iOS firmware versions altogether in order to preserve their baseband.
A bug has apparently been discovered in iOS 5 that allows a way to carrier unlock the AT&T version of the iPhone 4S, iPhone 4 and iPhone 3GS without the need to jailbreak or alter any hardware. The unlock will of course only allow you to use your iPhone on the T-Mobile network with Edge data speeds in the US however this is still a popular avenue for many iPhone users. If you want to try it, you will need a T-Mobile MicroSIM card or cut one down to the same size as a MicroSIM and follow the steps below:-
Thanks to chpwn and Steve Stroughton-Smith, Ryan Petrich has successfully shown off a proof-of-concept Siri port on iPhone 3GS. It doesn't work as well as the iPhone 4 port, mind you, but that's easily overshadowed by the sheer coolness factor.
No word on how or when, if ever, this will come to an iPhone 3GS near you. Whether due to beta-status, server load, Nuance licensing restrictions, or simple product differentiation, Apple has chosen to keep Siri exclusive to the iPhone 4S
The iPhone 3GS is still selling in huge numbers according to President and CEO of AT&T Mobility, Ralph de la Vega. Speaking on a conference call for analysts, he discussed the impact of the recent price reductions on the iPhone 4 8GB model and more importantly the now free iPhone 3GS.
The iPhone Dev-Team has gone ahead and updated UltraSn0w as planned with full support for unlocking your iPhone 3G, 3GS and iPhone 4 under iOS 5.
UltraSn0w 1.2.4 is available in Cydia now and supports iPhone 3G and 3GS basebands 04.26.08, 05.11.07, 05.12.01, 05.13.04, and 06.15.00. Remember, If you're trying to unlock your iPhone 4, the only baseband currently supported by UltraSn0w is 01.59.00.
iPhone Dev-Team member MuscleNerd has gone on the record stating a port of Siri to other iOS devices outside of the new iPhone 4S will require piracy, and likely won't ever see the light of day as a consequence.
Anyone hoping for a "port" of Siri from iPhone4S: pending a very low-level A5 exploit, it likely can't be done without piracy
New tests conducted over at AnandTech reveal that Apple has chosen to underclock the A5 system-on-a-chip nestled inside the iPhone 4S to ~800MHz, just slightly slower than the iPad 2's 1GHz, but still far better than the iPhone 4's A4 SoC -- by margins as high as 73%.
Maybe you've decided to get an iPhone but you're still not entirely sold on the $199+ iPhone 4S. Maybe the $99 iPhone 4 or free-on-contract iPhone 3GS seem like cheaper options? Fair enough. That's why Apple currently has 3 iPhone models on the market, with 3 different levels of specs, and at 3 price points.
Over the lifetime of a contract, you'll be paying a couple thousand dollars, so it's important to run the math on this and see what suits you best. Let's do that now.