It took me a bit to find this, and then I had to put up with Crapidshare being its usual self. So here’s the iPhone OS 3.0 Beta 2 IPSW file, for the iPod Touch Second-Gen.

http://justindaigle.com/files/iPod2,1_3.0_7A259g_Restore.ipsw

I’m having issues with WordPress it seems, so just copy and paste the link this time.