This hack will void your iPod warranty from Apple, although if you just rewrite your original firmware or restore your iPod there is no way for anyone to tell you did anything but use it like anyone else :-)
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Step 1: Enable disc use on your ipod.
Hooking-up your iPod to your PC
Opening up iTunes
Select your iPod and click the checkbox that says Enable Disk use. (if it isn't already checked)
Step 2: Download the iPod wizard, and background firmware!
Get iPod wizard
Also, you'll need the modified firmware file from:
Background Hack For 5.5Gen 30GB + 80GB Video iPod, and 5Gen 30GB + 60GB Video iPod:
iPod videos (not classic) are 5th generation. Yours is a 5.5g if it has the search feature.
Background Hack For Nano
Also be sure to check out the blog and wikipedia page for tons of other things to mod on your iPod:
Also be sure to check out: