Are you an aspiring developer? Read post 2!
I give you Cerebrum ROM. So far it is only AOSP Jellybean for LG Optimus One but more will come.
1. Wipe data, cache, dalvik, etc
2. Flash from SD Card
Things that will eat your battery:
- GPS (GPS will keep your phone awake after you use it. Restart the phone after turning it off)
- WIFI (Turn off wifi whenever you don't need it)
- 3G (Same as WIFI)
(Gapps are included)
More info, Download, Change Log, Bugs: CEREBRUM BLOG
- Cyanogenmod team
- Team MAC and all the LGICS people
- Oxygen team
- Kernel courtesy of LGICS