thread re-opened, because according to the change log, setool2 lite 1.11 can cross flash cid's
setool2 lite 1.11 - Top Sony Forums
i havn't tryed it myself and i'm not sure if you have to bypass the db2020 security, first try flashing the different cid firmware normally, if it fails then trying selecting the d2020 security bypass option, make sure you have the correct cid main firmware for your phone and a fully charged battery, if anything goes wrong just flash the main with the correct cid main firmware
oringal post by the_laser, clearly says use cross-cid flash
SETool2 Lite - SE-NSE Forums