I'm not responsible for anything that may or may not go wrong with your iPod Touch / iPhone. It's your choice whether to do this or not.
This is a tutorial on how to downgrade firmware WITHOUT SHSH blobs saved on Cydia's server.
Please tell me if this works for you too :)
This worked for me and I'm hoping it will work for all of you :) If you have any questions feel free to comment or PM me and I'll get back to you as soon as possible :)
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iPod / iPhone firmware: http://www.felixbruns.de/iPod/firmware/
TinyUmbrella: http://thefirmwareumbrella.blogspot.com/