[myTouch 3G, Magic Android Development] 1gr8papa:
This is a Step-by-Step fool proof guide to getting your T-Mobile myTouch 3g (32b) back to factory firmware with the ability to once again receive all official T-Mobile OTA (Over-The-Air) Updates.

*Note* There are two files named updated.zip that are both needed. We will keep them seperated by two folders needed at two totally different steps during installattion.The fisrt gets us back to 1.6 and the other gets us the newer radios for1.6...and Yes it works. Files are official....Nay-Sayers!

*Note*

Optional SD Card Format

From the settings menu of the phone, Scroll down to "SD Card & phone storage." Press "Unmount SD Card." Next press "Format SD card." If you go this route you will have to reinstall all media you had on the SD Card, i.e. pics, music...etc

STEP 1

Create a Folder named ANDROID on the desktop. In that create 3 sub-folders. Name the 3 sub-folders in this order: Cupcake, Donut Update 1, Donut Update 2

STEP 2

You need a copy of SAPPIMG.img. It puts the phone back to the "Cupcake" or 1.5 Firmware Version.

Save it in the Cupcake folder you just created.

STEP 3

Plug your phone into your PC and click "USB Connected" on the Notification Tab, then mount image. Your PC can now read and write to your SD Card. Find your downloaded copy of SAPPING.img and copy it to your SD Card. Unmount, unplug and power off your phone.

STEP 4

Reboot phone into boot mode by holding down volume down key while pressing the power key. It should boot into HBOOT and automatically run the SAPPIMG.img you just copied onto the SD card Click. Follow the onscreen instructions to initiate the automated update. Use trackball to accept.

If it did not boot to HBOOT, read the screen and do what it says to "Reboot to HBOOT." From there everything else should once again be automated. Follow the onscreen instructions to initiate the automated update. Use trackball to accept. Once the update is done and it says "Installation Complete," reboot by pressing Home and Back buttons together.

STEP 5

Once rebooted, do the initial setup. Once setup is complete, plug the phone back into the PC and re-mount the SD Card. It is safe to delete the SAPPIMG.img file from the SD Card now. You can also check to make sure the Firmware Version 1.5 is correct and installed by going to Settings-> About phone.

STEP 6

You need to Download the second file needed named update.zip. It gets us back to Android 1.6

Save it in Donut Update 1 folder. Once download is complete, copy the file update.zip to the SD Card like before. Unmount, unplug, and power off the phone.

STEP 7Reboot the phone into recovery mode by this time holding down the Home and Power buttons together this time. A picture with tirangle and phone will show press Home and Power again to get to the actual recovery screen. You now have 2 options to apply this update...either or:

*Note* Use trackball to navigate the cursor in this new menu

1. Apply update.zip from SD Card. This option will leave all user data that you previously put on the phone after the SAPPIMG install, i.e. Contacts, Apps, Settings...etc.

2. Wipe/Factory reset. This option will completely remove all user data from the phone. A clean slate if you will. If you choose this option, when the reset finishes, Make sure you do Option 1 Apply update.zip from SD Card. Once the update is done and it says "Installation Complete," reboot by pressing Home and Back buttons together.

STEP 8

Once rebooted, if you chose option 2 in the previous step you have to redo the initial setup. Plug the phone back into the PC and re-mount the SD Card. It is safe to delete the update.zip from the phone now. You can also check to make sure the Firmware Version 1.6 is correct and installed by going to Settings-> About phone.

STEP 9

You need to Download the third file needed named update.zip. It gets us back the latest radios.

Save it in Donut Update 2 folder. Once download is complete, copy the file update.zip to the SD Card like before. Unmount, unplug, and power off the phone.

STEP 10 = Finale

Reboot the phone into recovery mode by this time holding down the Home and Power buttons together this time. A picture with tirangle and phone will show press Home and Power again to get to the actual recovery screen. You now have 2 options to apply this update...either or:

*Note* Use trackball to navigate the cursor in this new menu

1.	Apply update.zip from SD Card. This option will leave all user data that you previously put on the phone after the SAPPIMG install, i.e. Contacts, Apps, Settings...etc.

2.	Wipe/Factory reset. This option will completely remove all user data from the phone. A clean slate if you will. If you choose this option, when the reset finishes, Make sure you do Option 1 Apply update.zip from SD Card. Once the update is done and it says "Installation Complete," reboot by pressing Home and Back buttons together.

Once rebooted, if you chose option 2 in the previous step you have to redo the initial setup. Plug the phone back into the PC and re-mount the SD Card. It is safe to delete the update.zip from the phone now. You can also check to make sure the Firmware Version 1.6 is correct and installed by going to Settings-> About phone. That is it!

;)Now you are good to go and are waitng for T-Mobile and their 2.0 or whatever other goodies they decide to throw or not to throw our way.