Efforts to compile Android 4.2 ROMs for various devices have been well under way. Now, we’re starting to see some their release around the forums. This includes CM10.1, the Android 4.2 version of CyanogenMod. Now, Sony Xperia Arc and Arc S users can give unofficial CM10.1 a try.
XDA Recognized Developer Zackconsole released the build for the Arc and the Arc S. The ROM is pretty stable, although that shouldn’t be surprising, since 4.2 isn’t an enormous update over 4.1. The issues are pretty standard, and include:
Anymore? Please Report(Don’t get to test as i need to return the device)
Despite the small number of issues, Zackconsole doesn’t recommend people use this as a daily driver because it’s still in its alpha stages. In other words, only give it a shot if you’re willing to bug hunt and help make it better. Users have reported that it is working nearly as well as the device’s CM10 builds, so it may not be very long before the ROM is stable enough to run daily.
For more info, check out the original thread._________