Originally Posted by liquidsnake555
I'm new with my Xperia X8 and all the Android world. I bought it used to another person, 3 weeks ago. edited... I'll really appreciate help.
You got three options.
1) If you are running Official Eclair 2.1.1 -> Repair your phone software using PC Companion
2) If you have a custom ROM with xRecovery -> flash all google apps again here
3) If you have a custom ROM with xRecovery -> flash your custom ROM all over again
If you have decided to flash a new ROM have a look at these post...
For Floyo-0.20 here
For Gingerbread 2.3.3 here