My galaxy s is on:
PDA: I9000XXJP3
PHONE: I9000XXJP3
CSC:I9000OXAJP3

Don't know how to downgrade it back to ofw Eclair 2.1 as this current firmware is screwing up my phone!! It's very lagging and it also FCs dozens of time in a day. Any good recommendation for firmwares? Download links please?

p.s. does samsung now has ofw froyo??