Got one of these little beauties just over a month ago now (2 year contract) and it's a fantastic bit of kit.
Mine's a bog-standard Vodafone 2.2 FROYO JP7 model and as usual, Vodafone are dragging their heels getting firmware upgrades out, so for the last couple of days I've been reading up about flashing mine to 2.2.1 JPY.
What are the main differences between 2.2 and 2.2.1 in day to day usage - is it faster, better battery life etc? Is there a more up-to-date stable firmware I could use with my model of SGS?
Happy with the stock UI, so I don't feel any burning need to use things like Darky's, but not ruling it out long term.
I know flashing will void my Vodafone warranty, but presumably when I put my SIM back in, the phone just boots up and connects to the Vodafone network as before, albeit running a 'non-Voda official' firmware?