So, let’s proceed for the procedure on how you can update your phone with the same but you will have to ensure that you are you follow every single instruction which is mentioned below or else there is a high probability that you may even brick your phone.
In the due course of this article we will see the pre update instructions followed by the list of enhancements which this version of firmware comes along and then last but not the least the actual procedure to update your phone.
The only reason this article is lengthy so as to ensure that you don’t miss out any of the rules and regulations of installing the firmware and even a basic user can update with this firmware.
You must root your phone and install a mod such as Cyanogen Mod to get your phone running a semi-equivalent of Android 2.1+. Additionally, if you do go with Cyanogen Mod, not all features are fully supported due to hardware limitations, such as Live Wallpapers.
You can run Cyanogen Mod 6.0, which is Android 2.2 aka Fro Yo.
A few tipps of mine: If you don't want it to be terrible slow, disable dithering and all effects in the settings. With the app titanium backup you will be able to remove some "garbage" apps which come with the cm release which is also helpfull.
According to Betanews, T-Mobile USA’s Erica Gordon denied that the company had any plans for a Cupcake related firmware update for the T-Mobile G1 in April, which is what quoted an unnamed source at T-Mobile UK as saying.
Gordon told Betanews that it was “just a rumor” and that she was not aware of T-Mobile International having any such plans.
It is worth noting, however, that she does not actually represent T-Mobile in any countries outside of the USA.
In the past, though, the UK and other countries have always received new firmware updates a week or two after the USA.
If you are owning a HTC Dream G1 Handset and thought that you will never get a chance to update your phone with the latest firmware version of 2.3.5 Gingerbread then you will have to give this a thought as we will now see in the due course of this article on how you can easily update your phone with the latest version of firmware that is Gingerbread 2.3.5.
Please note that this update which we will be watching out is the unofficial version of Gingerbread 2.3.5 and all thanks to the Cyanogen Mod Team who has made this into a reality as these guys have done a fabulous work to taste the HTC Dream G1 handset with the Gingerbread 2.3.5 treat.