Redsn0w has just been updated to beta 4 to support the latest iPhone OS 4 Beta 4 firmware. iPhone OS 4 Beta 4 was released by Apple last week, which since Beta 2 has closed the jailbreak loophole used by Redsn0w 0.9.5b1 and b2 to jailbreak OS 4. But with this latest version of redsn0w, you should be able to jailbreak iPhone OS 4 again on iPhone 3G.
AppSync patches MobileInstallation file on iPhone OS 3.x which is needed in order to install .ipa files manually without using iTunes. I have been asked repeatedly, both by email and in comments about the latest version of AppSync which is compatible to work with the newly released iPhone 3.1.3 firmware.
PwnageTool 3.1.5 for creating iPhone 3.1.3 custom ipsw files is now LIVE! The infamous iPhone Dev-Team has updated their PwnageTool for Mac to make it compatible with the new iPhone 3.1.3 firmware. This latest version of PwnageTool can jailbreak the original iPhone (Edge/2G), iPhone 3G, iPhone 3GS(older bootrom only with baseband 04.26.08) and iPod touch (1G and 2G non-MC model; 2G should also be pre-jailbroken) running on iPhone firmware 3.1.3. The custom .ipsw firmware files created with PwnageTool can update iPhone to firmware 3.1.3 without updating its baseband so that it can be unlocked to run on any carrier SIM. If you previously relied on blacksn0w unlock for iPhone 3GS, then this is NOT for you. iPod touch 3G is also currently not supported.
The iPhone Dev-Team has just confirmed (sort of.) that they are working on a new version of PwnageTool which will enable iPhone 3G and iPhone 3GS users to jailbreak iPhone 3.1.3 firmware without having to update their baseband. For those of you who don't know, PwnageTool, like Sn0wbreeze is an iPhone jailbreaking tool which creates custom .ipsw files without the upgraded baseband.
