My iphone locked me out after an itunes update, how can I uninstall it?

Okay I have an Iphone 1 ( version 4.2.1) that I was using to listen to music WITHOUT a sim card in it. It would let me in anytime I wanted, and then I accidently updated Itunes and it decided to lock me out because I don't have a sim card. How can I uninstall it or where do I get a good jailbreak for it? Redsnow isn't working quite right /

If you are running into any trouble installing or uninstalling iTunes or problems with it in general you will probably want to check this article before you go completely nuts!

http://zardozz.com/zz/2008/04/how-to-completely-uninstall-and-remove-all-traces-of-itunes.html

iTunes can be very difficult to uninstall properly because of a number of registry keys left behind by other pieces of software that it works with that also need to be removed. The article explains what you have to do step by step if you can't uninstall iTunes using the ADD/REMOVE programs. If you don't uninstall it properly you can get all sorts of errors when trying to install a new copy… Even if you try to write over your existing copy. It saved me hours of aggravation and I did not lose my music!
Here is an article that has some good information on accessory software for iPod iPad iPhone and iTunes… Many free - and there's also info on jailbreaking pros and cons.http://rockbridgereviews.com/accessory-software-for-ipod-iphone-ipad-and-itunes/ also see this review article on alternatives to iTunes: http://zardozz.com/zz/itunes-alternative

MM is the 3rd most popular media file manager software behind Apples iTunes (of course) and the stock Windows Media Player (no iPod support). The really cool thing about this software as an alternative software to iTunes and Windows Media Player is that it also interfaces and syncs up with iPods, iPhones, iPads and even the Android with more smart devices to follow. I also like that they are vendor neutral (they are not tied to Apple or anyone else) and are working to provide a solution for All smart hand held devices over time. That's probably a good thing!

There's in fact software out there that can do lots of different things with Apple products. Often they are cross compatible with other non apple devices as well. One review article http://rockbridgereviews.com/accessory-software-for-ipod-iphone-ipad-and-itunes/ has links to software developers that offer various types of software, some for free at basic levels, for backing up, transferring music, alternative organizer software, restore recover and backup software that might be worth checking out.