The HTC Dream or T-Mobile G1 is the first Android powered smartphone. It has a 3.2-inches display, at a resolution of 320 x 480 pixels and is powered by a 528 MHz ARM 11 CPU. If you think the G1 had gone and nobody will remember its again then you are wrong. There are people who still care about the very first Android Phone.
Whenever an Updated version of Android OS come out some older devices fall behind and never see the latest version of Android on It. In that situation we turned to our beloved developers who work to port the newest Android version on older android phone or tablet. Based on Android 4.1 Jelly Bean, CyanogenMod 10 Roms are now available for many devices. The latest CM10 port demonstrates that it is possible to run Jelly Bean on any device even with very low-end specs.
In example, SoCal Devs managed to port Android 4.1 Jelly Bean on HTC G1 and posted detailed instructions on how to do it at XDA. It is not fast, in fact it’s quite sluggish and cannot be used as a daily driver but Jelly Bean does work on the T-Mobile G1. This build is mostly for demo purposes. If you happen to got a HTC Dream in the drawer or somewhere, find it now to test some of the CM10 builds features on it. The ROM is Currently in pre-Alpha state. The developers are working to make it better, maybe bring speed improvements in the future. Watch the video below to bet a better idea on how Android 4.1 runs on the G1: