@goran and vtec303
Thanks for the immediate response guys. Really appreciate in. I have a few more doubts. Even after doing full wipe every time, I still feels that nothing has been wiped and um on the same boat again. The following is A full wipe right.
1. Wipe data/factory reset.
2. Wipe cache partition.
3. Wipe dalvik cache.
Now after doing this and odin as vtec303 has instructed , I should go to recovery mode, flash 2.0 reboot and then 2.2 right.
sent from my awesome GS II using Xda Premium app.
That's right...wait one full circle of boot..and after completely powering up with 2.0 - go again in recovery - wipe ONLY DALVIK (just in case) and flash 2.2