Hi Saint,
thx for the answer!
I've read alot about the logic board in the internet and now i think should go for:
820-1765-A ...,because I have a 128 GB CF and not sure if it works with 820-1763-A
There should be a difference with the RAM 64 MB or 32 MB. Is it possible, to see it in part code or is it luck ?
Will the RAM make a difference for using Rockbox ?
Is there a option in Rockbox to see the RAM Size of the logic board ?
...and honestly they are very expensive. Maybe iam looking for an damage Ipod on ebay

Greetinx from Germany, Thilo