... But damned if it isn't cool to see the original Android phone from late 2008 getting some custom Jelly Bean love. Yes, it's slow (sloooow), unstable, and the hardware's prehistoric, but it's Jelly Bean -- based on a port of CyanogenMod 10 -- and it's running on the T-Mobile G1 (aka HTC Dream). See the full preview video from the developers above, or check the forum thread linked below if you fancy firing up your G1 for old time's sake and flashing this custom ROM.

Source: XDA