Quickly Update G1 Phone Firmware Manually
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HTC T-Mobile G1 Phone running Google Android was publicly launched on October 22. G1 phone is available in UK and US markets where as users from other country have to wait till HTC and T-Mobiles planes to roll out G1 Phone in your country.
T-Mobile G1 Phone is shipped with RC19 original Android Build. T-Mobile is slowly providing firmware updates for Google Android G1 Phone. It was expected that RC28 update will be available for G1 phone and there are some users having Firmware with RC28 updates on their G1 Phone but now Google has stopped providing RC28 and Skipped to RC29 to fix most important security flaw.
The roll out of RC29 Firmware Update is really very slow and users are getting eager to see their G1 Phone Firmware with RC29 update. If you are one such user then don’t worry here is way to manually the update firmware of your T-mobile G1 Phone to RC29.
Steps to Manually Update Firmware of G1 Phone
1. Get the RC29 update from Google ( Download ) (Link is from Google Android Website)
2. Rename it the downloaded file from signed-kila-ota-115247-prereq.TC4-RC19+RC28.zip to update.zip, and place it in the root of your Micro SD card.
(Don’t forget to unplug your handset from Computer USB before proceeding for next step)
3. Turn off your G1, then turn it back on by holding the Home+End keys until you see an icon popup after the T-Mobile G1 logo.
4. From the icon screen, open the keyboard and hit Alt+L. This will display the log saying what is happening (although you can skip this step).
5. Now press Alt+S to begin the update. Remember, the update needs to be in the root of the Micro SD card and needs to be named update.zip.
6. Once it finishes, just follow the onscreen instructions and press Home+Back to finish.
7. The G1 will reboot a few times to flash different parts of the firmware.

G1 Phone Firmware Update Process
That’s it we have done it with G1 Phone Firmware update process, to confirm that your firmware update process was successful check Firmware Build number by hitting Menu > Settings > About Phone > scroll to Build Number of your G1 Phone.
Source:Mobilecrunch
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Reader Comments
Thank you sandip. I did this and I think it actually worked.
Impressive. :)
what was the update for???
[...] T-Mobile G1 Phone aka Google Android Phone has already got big attention from Mobile User Community. G1 Phone is available in UK and US markets but users from other country have still wait to have their hands on G1 Phone. Even T-Mobile has started updating firmware of G1 Phone. [...]
[...] G1 phone was in news for slow roll out of RC29 updates which has one of important fix for security flow then it was White G1 phone model which has created [...]
[...] want to admit), so you just have to wait. But I was too frustrated and found a method for manually updating it. I gave that a shot and NOPE! STILL [...]
Looks like Google pulled this file off their site.
I hope Google going to work on a new battery for this phone because I always have to recharge this phone. If thye were they would have a winning product.
[...] several news of google android having several security bug in original RC19 build and then later T-mobile pushing RC29 updates which got one more high severity bug ability to root on your G1 [...]
hi all from the mother of all novices once you download the update its in rar format do you have to extract it then put it on sd card or do you put it on as it is?
look frwd to your help thanks in advance
My g1 already had RC 30 when I purchased it.
i got stuck on 2. Rename it the downloaded file from signed-kila-ota-115247-prereq.TC4-RC19+RC28.zip to update.zip, and place it in the root of your Micro SD card.
Tried to update but it failed on the verify. Unfortunatly I cannnot copy it to paste it in here. Any1 else had the problem?
same prob as tony.. how do you dl it to the root of your sd card?
to Mike. dl the updates on ur pc, rename it if necessary and copy it on sd root which is plugged on the pc with an sd adapter.