apple ipod os update

Can we download the software from Apple OS 3.0 on a first generation ipod touch after the new IOS 4.0 out?
if so, how What are you doing? I can using the 2.2.1 software. And I tried desperately to get the OS 3.0 software, but do not know if still available as there is now new 4.0 IOS software, which is not compatible with the iPod touch 1st generation. I Gernere fist. I have the latest iTunes, currently version 9.2, but when I click "Check for updates", he said: "This version of the iPod software (2.2.1.) is the current version." I can not use half the applications because they all need at least OS 3.0 software. How do you get this software? I can not find anywhere, not in the Apple Store and anything. Where I can buy? I know it costs $ 10, but I can pay, if only I could get the software. How I can get this software? Where I can get this software? "I can still get anything? Any help would be great, thanks:)
Yes, you have to do is google "firmware 3.0 First generation iPod "Download the file and corresponds to open iTunes and connect your iPod to the main screen where you are given the opportunity to click Update to restore shaking down the SHIFT key. You open a box of Cardiology and the possibility to choose the firmware you downloaded earlier and then press Enter You should keep iPod and then update OS3 Good!
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