Only a week after the T-Mobile G1 was launched, a security hole was discovered that allowed access to Android’s root directory on the G1. google and T-Mobile worked quickly to patch the hole and T-mobile sent out an over the air firmware upgrade to G1 users. For many, the RC30 firmware upgrade did not do much. A few big fixes were included to make the general public happy, but developers and system hackers were only disappointed. To them, the security hole was an opportunity to dive further into the core of Android and tweak the system a bit more. Some developers have used root access in an attempt to start skinning the default Andorid UI, but other than that there have been no major advancements for those who still have root access.
Just recently, one of the developers on the xda-developers forum came up with a pretty simply way for G1 users to revert back to their original RC29 firmware and regain root access. I must warn that doing this could void your warranty and brick your phone, but there are quite a few success stories of forum members who have tried it. So if you’re interested in making your G1 UI look a little more unique
Oh, and there’s one thing that I want to help clear up. Getting root access on Andoid is not called "Jailbreaking". That was a term used for unlocking the iPhone to install apps on it. Root access is nothing like that since Android is an open source system. It seems there are a lot of bloggers out there simply using the wrong term.
