If you want to upload to the latest 2.0.2 version of the iPhone operating system, and you have a PC, check out the new QuickPwn for Windows, which now supports it. Yippee Kai Yay and all that. Mac users, hold on because they are working on the Mac version too. Until then, you can always use Pwnage. [iPhone Dev]

credit -http://gizmodo.com/5039822/quickpwn-for-windows-now-supports-iphone-os-202

iPhone Jailbreak Now QuickPwned: No Need for iTunes-Based Restore

News is just out of a new way to jailbreak your iPhone, and this time the tool is specifically designed to work "quickly and easily, without requiring a full restore." Quickpwn has been released as a beta, intended to complement the main PwnageTool. It works with iPhones and iPod's running 2.0.1 firmware, and operates very quickly without needing iTunes to rebuild/restore your device afterwards. This beta version is basically feature-complete, but lacks a "funky UI" (they're adding that soon) and is currently windows only (other OS's are "coming soon"). It's available here. Keep your eyes open for a complete version (though remember that even though it's development software, it's apparently "impossible for this to permanently damage your device"). [iPhone-Dev.org]

credit - http://gizmodo.com/5038157/iphone-jailbreak-now-quickpwned-no-need-for-itunes+based-restore