I tried this method and it worked. First full wipe and install 2.4.13, then after two reboots install 2.4.20 without wiping anything. It is like upgrading.
OK. I did a full wipe with clearing both cache. It seems mine is also rebooting. So now I will try to install 2.4.13 and then upgrade it to 2.4.20 without wiping date. then I will report.
I backed up these in 2.4.13. Contacts, Call Logs, Messages, System Settings, Wi-Fi Settings, Desktop layout, Alarm settings, Notes, DND settings.
I successfully restored it in 2.4.20. Try the above.
Hi cro0707, It looks like it is better to report the problems to you that you could put in your list and all the bugs list will be in one place.
1)Play store reverts back to market after every restart (checked, it really does)...
I haven't tried it but someone from here told that he uses Siyah Kernel in his SGS2 MIUI version in order to move app to sd card. Try the kernel may be it will work
Go to ClockWorkMod Recovery and there WIPE CACHE PARTITION and WIPE DALVIK CACHE. Then check if it works or not. If it doesn't works .In ClockWorkMod Recovery do a WIPE DATE/FACTORY RESET. See if it helps