Samsung Epic 4G users can now upgrade their old devices to the latest Android 4.2, using CyanogenMod 10.1 for the device. This was a popular and the first Galaxy phone among many from 2 years ago and developers just refuse to retire it. However, take note that nightlies are not the same as typical drivers and a few users may be affected by some bugs, but nothing that will prevent it from running smoothly on Android Jelly Bean 4.2.
Before flashing, always back up your data and download the CM 10.1 for the device, so you can enjoy the new features and capabilities that the latest Jelly Bean brings such as lock-screening of widgets and other system and network additions. "Epic" is truly the operative word and judging from the fan-base that this phone has created, it remains to be one of Samsung's greatest phones.
Download Link: cyanogenmod