Sony Ericsson k810i

Tell me if i did right...Anyway i flashed my phone to R8BE001 and its the newest,should i put older in?? then i can apply patches n such?? because i got cid 53 and i can downgrade it to cid 52 with older ones right?

I know how to flash correctly,but adding patches with setool.2 it says cant build chain loaders....anyway if i put older firmwares in then it works??

Must use jdflasher for patches, not Setool. And cann't turn back to CID52.
Read here: Patching CID53 (DB2020)DB2010,2012 - Top Sony Forums