If you’re relying on carrier unlock, stay away from iOS 4.2 ipsw when it’s out, but not for too long. @sherif_hashim confirmed that Ultrasn0w will be released “just after the 4.2 official release”.
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PwnageTool is arguably the only proper way to upgrade your iPhone if you rely on jailbreaking and carrier unlocks, because it is the only tool that allows you to maintain your current baseband. It is also the only software to jailbreak iPhone 3GS for now (redsnow doesn’t support 3GS yet).
Although this time iOS 4.0 can be jailbroken and unlocked, please expect this may not happen immediately or ever with the next update, as Apple tries to update the baseband with each new firmware updates, which blocks jailbreaking and unlocking. In which case, only PwnageTool can prevent an upgrade of the baseband while allowing you to enjoy the rest of the new firmware’s new features.
Yes it’s finally out.
Along with Apple’s official release of iOS4, the iPhone Dev Team released UltraSn0w 0.93 to unlock iPhone iOS4 with baseband 05.13.04, which also unlocks all basebands since iPhone OS 3.0. Basically, now all iPhone 3G and 3GS can be unlocked after being jailbroken first. iPhone 3G can be jailbroken using redsn0w below, while iPhone 3GS can be jailbroken by PwnageTool 4.0
Since the tools here are still in their beta stage, we still recommend you wait for Dev Team’s stable releases, especially if you want to use PwnageTool to preserve your baseband to have an extra cushion.
But if you just cannot wait any longer, you really don’t lose that much, since iOS4 can be both jailbroken and unlocked anyway.
So here we go.
How to unlock iPhone iOS4 with baseband 05.13.04
1. Download the official iOS4 firmwares, iTunes v9.2, and redsn0w 0.9.5b5-3.
2. Install iTunes v9.2 and back up your iPhone.
3. Jailbreak your iOS4 with redsn0w 0.95 for iPhone 3G, or with PwnageTool 4.0 for iPhone 3GS.
4. T-Mobile USA users should disable 3G now.
5. Launch Cydia from your iPhone home screen.
6. Then search for ‘ultrasn0w’ in Cydia and install ultrasn0w. Install it and restart your iPhone.
Share your unlocking experiences by leaving comments below.
The Dev Team is expected to release the unlocking tool on June 24, the same day Apple is going to release the official iPhone iOS 4 update.
This new unlocking tool is expected to also unlock older baseband of 05.12.01 from iPhone OS 3.1.3. So sit tight for this Thursday’s official iPhone iOS4 update and Dev Team’s iPhone unlocker.
In the meantime, you can download the iPhone iOS4 now and get ready by backing up your iPhone.
Follow us on twitter to be the first one notified for the unlocking tool.