I have been googling for days now and couldn't find the answer.
I rooted my optimus one with super one click then tried to flash roms with no luck:
Tried flashing 4.4.2 by bigsupersquid - but it got stuck on the logo
Tried flashing the stable CM 7.2 - worked but it got stuck on airplane mode all the time so I don't have service
Tried flashing ICySNAP-v2.0-CM9 - same as with the CM7 - stuck on airplane mode
I always did a clean flash, used the right CWM for the ROM installation but nothing I simply can't get rid of this 2.2 android T_T
Hope someone could help.