- Download the update from google website:
- Rename the file you just downloaded to update.zip
- Copy the file update.zip to the root of your micro sd card.
- Now turn off your phone and turn it back on while holding the home key.
- When you see a triangle with a exclamation sign and a phone, slide open your keyboard and press ALT-L to display the menu and then ALT-S to start the update process.
- Wait for the update to finish. If prompted, press Home + Back to restart your phone.
- Wait a little bit more and done!
thought i already got the RC19+28 zip file and renamed it as update.zip
i formatted my sdcard is this have effect? like i need to make a specific folder so the G1 can detect it? PLEASE HELP coz my G1 phone ain't got any apps even the messaging,calculator etc..