CM10 randomblame's Jellytime
CM10 civato's JB 4.1.2 FLEX v6supercharged
CM10 pjsports's rom
CM10 builds from wds :unmaintained
Jelly Bean Gapps:
Gapps full list.
The unlocked ICS bootloader is required.
If you encounter an error during the flashing process use another recovery, TWRP is known to cause problem with this rom, a CWM based recovery should do it.
If you have problems with the Google Play Store after a bit, uninstall updates for it.
If you want to avoid the lockscreen bug, you can disable it in settings-security.
Report bugs & issues with your attached logcat in the development thread.
How to logcat?