Updating g1 phone
For those who are just too impatient to wait and are feeling brave this is a good instructions are as follows: Warning, this is for informational purposes only.
A member of our Android Community (lgsilvaas), has just found instructions showing how to update your G1 without getting the over-the-air update.
Operator T-Mobile has confirmed that will let out the following version of an insertion 1.1 /RC-33 for smart phone T-Mobile G1 from February, 5 till February, 15th.
The insertion will be updated in mode OTA (Over the Air, "by air").
It will add most of the Android Eclair functionality to older android phones, except for Live Wallpapers, but I didn't really see myself using any live wallpapers anyway.
The one catch is that the new ROM is too big to fit inside the G1's tiny internal memory.
If you have any question about doing this, don’t even try it.
The Android operating system for smartphones and tablets gets periodic system updates just like Apple's i OS for the i Phone and i Pad.
You could also install a version of Cyanogen Mod on the device, I believe that allows you to use wifi to authenticate.I was worried, but then I realized you just need to have one of the radios currently on your phone or you need to install one of the images I downloaded.That’s why we’ll explain how to upgrade your T-Mobile G1. It allows your device to be up-to-date, and run more smoothly.Google frequently updates its Android OS and there’s probably one for the T-Mobile G1.So that you can accomplish the upgrade, you must go to the Settings menu on your T-Mobile G1. Right after that press Update System or you will see a button which allows you to search for the most recent update available.
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danger spl how to at says that the pre-requisites are a rooted G1/Dream phone (check) and a compatible radio, with links to the radio images.