How to unbrick your rooted HTC EVO View 4G after accepting the Honeycomb update [Updated]
So you rooted your HTC EVO View 4G tablet with Revolutionary. You patiently waited for what seemed like an eternity for the fabled Honeycomb update. It finally arrived, you just couldn't contain yourself, and you installed the update in spite of warnings that told you to wait.
And now your tablet won't start up and is stuck on the white HTC screen.
If you are one of the many unfortunate individuals in this situation, fear not, as there is a simple solution that will get you up and running in no time.
There are two options that will get you back to Gingerbread. To be safe, you should have at least 30% battery left before attempting either option.
Option 1: Return to unrooted, stock Gingerbread using RUU
1. First, download the most recent available RUU update for the EVO View; be sure to set aside enough time to download this as it's over 500MB.
2. Once this has finished downloading, boot your tablet into Fastboot:
a. If your device is currently completely turned off, press and hold the volume down button, and then press the power button long enough to power the device on. You should now be in the bootloader; using your tablet's volume keys, select "Fastboot" from the available menu options, and press the power button to select it.
b. If your device is currently stuck at the white HTC start-up screen, press and hold the volume down button, and then press and hold the power button at the same time. You may need to press both buttons simultaneously for up to 15 seconds. Your screen should eventually turn off; lift up the power button but keep holding volume down. You should then boot into the bootloader; using your tablet's volume keys, select "Fastboot" from the available menu options, and press the power button to select it.
3. Once in Fastboot, connect your tablet to your computer with your USB cable. Click on the RUU.exe file that you previously downloaded, and follow the instructions on your computer screen.
4. Once the RUU has completed running (it may take up to 10 minutes), you will be returned to stock Gingerbread, software version 1.22.651.1. Your hboot will remain S-OFF, allowing you to re-root by flashing a custom recovery and Superuser.
Note: You should still hold off on accepting the Honeycomb update, as your bootloader is still a Gingerbread-only unlocked Revolutionary version. If you attempt to apply Honeycomb with this bootloader, you will end up right back to where you started: with a brick.
Option 2: Restore from Nandroid
Note: If you choose option 2, you must have ADB set up on your computer and be comfortable using it. You must also have a Nandroid backup saved on your SD card.
1. Go to Fastboot on your tablet using step 2 above.
2. Once in Fastboot, connect your tablet to your computer with your USB cable.
3. Download the ClockworkMod custom recovery, and then place it in your adb folder.
4. Open adb and type the following commands to flash ClockworkMod and boot into recovery:
fastboot flash recovery cwm-18.104.22.168-express.img
fastboot reboot recovery
5. Once you are successfully in recovery, restore your Nandroid backup, or install a different custom ROM that you have already saved to your SD card.
Updated 12/27: Developer globatron has come up with a way to apply Honeycomb on devices that previously rooted using Revolutionary. See this post for more details.
Please note that these methods might not work for everyone. Some users have managed to brick their tablets beyond repair and must rely on the good graces of HTC to (hopefully) provide a fix. So let me reiterate again: if you are rooted, DO NOT apply the Honeycomb update until a developer has figured out a way to do it safely.
Secondly, if you successfully applied the Honeycomb update, you have – for the time being, at least – lost root access, including the ability to flash custom ROMs and use root-only apps. There is currently no known way to root Honeycomb on the View, and no known way to revert back to Gingerbread after successfully upgrading. Sorry, but you should have listened to our warnings.
In any case, good luck to everyone out there who has updated, who is waiting to update, who doesn't want to update, or who currently owns a brick. May the force be with you!