I feel like such a n00b.....
I bought XMen - Rise of Appocalypse this week, which needs 2.0 to run. Fine, I figgered, I'll change mem sticks ( just bought a 1gig - woo hoo!!), keep this for Xmen & any other games that require 2.0, use my 256 for homebrew & other games that'll work with 1.5. I felt I should be safe from any probs with games saved under different OS versions. I updated to 2.0, confident that I could downgrade as needed,and tried using the browser. As I was having difficulties, I
used network update (NOT SYSTEM UPDATE) but this updated me to 2.5!!!!
NOW I'M SCREWED!!!! No more homebrew or reliving games from the past for me, learn my lesson well oh my brothers!