Guide: Updating your T-Mobile G1 to Android 1.5 (Cupcake) manually
Guide: Updating your T-Mobile G1 to Android 1.5 (Cupcake) manually
Here is a guide for how to update your T-Mobile G1 to the new and hotly anticipated Android 1.5 (Cupcake) firmware update, manually, instead of waiting for the OTA (over the air) update that could take weeks to fully rollout. Be noted this works for other RCs as well, but for this guide I will specifically be using the new 1.5 update. Please also note if you phone is rooted (we will have guide for that up soon), then this will remove your rooted firmware, un-rooting your phone.
First off, you will need to download the update from the following link: Official US Android 1.5 update.
If you are from a different nation that offers the phone, please visit here for your update: Android 1.5 (Non-US)
Once you have downloaded the update, rename the archive to update from signed-kila… so that the full archive is intact (unpacked) and is Update.zip.
The next part is important. Insert your microSD card into the slot in your G1 and plug the phone into your computer. Your phone will give you a notification that you are now connected via USB so open the notification and select Mount. Your SD card will now be accessible via the computer as a removable drive.
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