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Yesterday, I shared a guide to jailbreak iPhone OS 4 beta with redsn0w 0.9.5 and now I’m sharing another guide, which will help you unlock your iPhone 3G running on iPhone OS 4 firmware.
However, this unlock will only work with 05.08 bootloader. If you have any other bootloader, ultrasn0w will not work for your device. The steps to unlock the iPhone 3G are pretty much same, but if you are not sure about it, go through the following guide.
iPhone OS 3.1.3 jailbreaking tools are slowly started appearing on the internet. Sn0wbreeze tool is already available and we might see updated versions of some other popular tools very soon.
If you want to unlock your iPhone, you can use either ultrasn0w or blacksn0w. Both the tools work very smoothly and help unlock the device. In case you don’t know how to operate any of the above tools, you can follow the given tutorial below.
Today, iPhone dev team has released a new unlocking tool, Ultrasn0w 0.92 to unlock iPhone 3.1.2 firmware. Earlier ultrasn0w 0.9 was working perfectly, but in the latest firmware update it has started giving some weird problems to iPhone users.
After jailbreaking iPhone 3.1.2 firmware with PwnageTool 3.1.4 and unlocking it with ultrasn0w, many users found that carrier name and logo was missing. Now, this bug has been removed from old ultrasn0w tool and ultrasn0w 0.92 comes with proper fix.