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George Hotz (aka geohot) has confirmed via his twitter account today that his blackra1n and blacksn0w tools are currently not compatible with the latest iPhone 3.1.3 firmware. This new firmware brings 05.12.01 baseband for iPhone 3GS and iPhone 3G which restricts jailbreaking and unlocking on newer devices.

Jailbreak iPhone 3.1.3 blackra1n

Yesterday Apple pushed a new firmware update for all iPhone and iPod touch users which brought some important security and bug fixes. Features wise, there was nothing new to be seen in the firmware. Since this firmware updates the baseband to 05.12.01 on iPhone 3GS and 3G, therefore you are required NOT to update to this firmware if you want to preserve your unlock on iPhone 3G and iPhone 3GS. Jailbreaking will also NOT work with iPod touch 2G(new MC models) and iPod touch 3G. The only devices which can be currently jailbroken using redsn0w 0.9.x is iPhone 2G and iPod touch 1G/2G(older non-MC models).

Follow the step by step guide here to jailbreak:

Note for iPhone 3GS, 3G, iPod touch 2G(new MC models) and iPod touch 3G
We strongly suggest that you stay away from this official upgrade until and unless the DevTeam or George Hotz releases new jailbreaking and unlocking tools for 3.1.3 firmware. We will let you know when it will happen. In the meantime you can follow our complete jailbreaking and unlocking guide for iPhone 3.1.2 firmware using blackra1n, PwnageTool, redsn0w, sn0wbreeze, ultrasn0w and blacksn0w.

UPDATE 1: Sn0wbreeze 3.1.3 -V1.3 is LIVE! Follow the guide posted here to jailbreak iPhone 2G, 3G and iPhone 3GS (older bootrom only) on iPhone 3.1.3 firmware. iPhone 3G and 3GS can then be unlocked using ultrasn0w or blacksn0w. iPhone 2G can be unlocked using the guide posted here.

UPDATE 2: Sn0wbreeze 3.1.3 V1.4 is now LIVE for iPhone 2G, 3G, 3GS and iPod touch 1G. More info and download links can be found here.

UPDATE 3: Sn0wbreeze 3.1.3-V1.5 is now available, brings support for iPod touch 2G on 3.1.3 firmware. Download it from here.

UPDATE 4: PwnageTool 3.1.5 for Mac OS X is now LIVE! Follow our complete step by step guide posted here to jailbreak and unlock iPhone 2G, 3G, 3GS and iPod touch 1G, 2G on iPhone OS 3.1.3.

You can follow me on twitter or join our facebook fanpage to keep yourself updated on all the latest iPhone jailbreaking and unlocking releases.

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