I noticed today whilst I was making the Index for the website, I hadnt posted a guide to jailbreak 2.1 so here it is.
Courtosy of iTouchNathan on iPodTouchFans,
Download it from iTunes
YOU NEED TO HAVE YOUR FIRMWARE SET TO 2.1 BEFORE YOU DO THIS.
YOUR FIRMWARES ARE LOCATED HERE:
C:\Users\<USERNAME>\AppData\Roaming\Apple Computer\iTunes\iPod Software Updates
Windows Vista
C:\Documents and Settings\<USERNAME>\Application Data\Apple Computer\iTunes\iPod Software Updates
Windows XP
- For those who installed WinterBoard and get gray fonts, download White Winterboard fonts and extract and add to your themes which are found at /private/var/stash/Themes
OFFICIAL QUICKPWN FOR 2.1!
THIS GUIDE IS FOR WINDOWS USERS ONLY!
Make sure you have firmware 2.1 and Quickpwn 2.1 which you can download here
1. Open up Quickpwn 2.1
2. Plug in your iPod.
3. Follow the steps on quickpwn. (when you are at select firmware 2.1 it should already be at the place where your bundles are)
4. Wait a little while 
5. Done! 
Have fun with your newly pwned iPod 
Courtesy of the Dev Team 
MORPHEYS QUICKPWN FOR 2.1!
THIS GUIDE IS FOR WINDOWS USERS ONLY!
Make sure you have firmware 2.1 and Morpheys quickpwn which you can download here
1. Open up Morpheys Quickpwn
2. Plug in your iPod.
3. Follow the steps on quickpwn. (when it comes up to select your firmware, look at the top of this page to find out where your firmwares are)
4. Wait a little while 
5. Done! 
Have fun with your newly pwned iPod 
Courtesy of the Morpheys Quickpwn
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