So I have an LG P500 Optimus One, came with stock Android 2.2.1 ROM. Now I want to root it, mainly to install milk's touchscreen bug fix kernal. I found out that rooting is currently not possible on 2.2.1 ROMs. So I need to downgrade to 2.2, obviously.
How do I do that without rooting? I'd guess that I need to install an official 2.2 ROM, but I doubt LG still provides those.