CM10 or JellyBean Preview
So Mr Troy has done it again
he has released a very rough but working JB rom, I've yet to try it to see if it works on the Extreme but props to him and his associates for pulling it together
I copied his original quote from slatedroid below:
known bugs:
* hw accelerated video playback (cedar libraries will not compile because some prebuilt blobs require ICS functions)
* camera (needs cedar)
* hdmi output (i will try to implement iy in next builds)
* ntfs / exfat (the same as above)
* mass-storage
* other things i guess
flash rom + gapps + comp zip 1.2 and do a full wipe
tested on Mediacom 907c so i don't guarantee it will work on other devices, probably it will not work on devices with a "legacy" compatibility zip because the ramdisk has changed
later i'll open a dedicated thread i guess