I'm having the same problem with the phone reading the image. I've tried 2 different sd cards and get the same problem.
Basically the only reason I'm wanting to unroot is to install the newest update from Verizon (that won't install since I'm rooted, I understand).
Can I install an updated root or do something that will let me install the Verizon update besides unrooting?
Is this method applicable to HTC Desire? As I badly need to downgrade my phone. ThanksUpdate: The files linked below have been updated to include stock 2.2 plus the 'November OTA' contents.
There have already been several requests for information on how to downgrade back to the official 2.2. The following process will remove root. Whether you need to return a phone or you just want to clean the slate and go back to stock, here is how to get there:
Note: Your SD card MUST be formatted to FAT32 before proceeding. The file will not be recognized otherwise. If you have yet to format, remember that formatting wipes the card. Be sure to copy/move your SD contents to a safe place (PC desktop) and replace after the formatting process. I will not go into the procedure in this thread as it is easily found with a Google search.
1.) Need to return a phone and currently have S-Off? (aka Unrevoked Forever) If so, please visit public:forever [RootWiki] where you can download the latest S-On tool and the process to load to your phone. If you want to keep S-Off and just return to the official 2.2, skip to step 2.
2.) Download the 2.2 PB31IMG.zip (extracted from the official 2.2 RUU)
Mirror 1 (Credit and thanks to Doug Piston for hosting)
Mirror 2
Once downloaded, rename the file to PB31IMG
Note the file size (172 MB) and the MD5 (31BB1611A0FA8197D447C0438426717E) to ensure a successful download and file integrity. If you have questions about how to verify MD5, please see post #2 of this thread.
3.) Attach phone to PC with USB debugging on and in disk drive mode.
4.) Access the SD storage and drag the PB31IMG zip file (still fully zipped) from the desktop onto the root of the SD card (any open area, do not place into a folder).
5.) Swipe down notification bar on phone and change to charge only.
6.) Unplug phone from PC and turn off phone.
7.) Hold volume down while pressing power button to enter hboot.
8.) PB31IMG.zip should be automatically recognized in hboot. Press volume up to continue with update. Do NOT interrupt.
9.) When finished, reboot to stock 2.2 and verify the following information at Menu > Settings > About Phone:
Android Version: 2.2
Baseband Version: 2.15.00.07.28
Software Number: 3.26.605.1
10.) Remove the PB31IMG.zip from the SD card to avoid an inadvertant reload in the future. You are now unrooted and on stock 2.2
_______________________________________________________________________________
Also adding the RUU option for those that are interested. Thanks again to Doug for the upload/host. For those new to RUU, download to a PC and run from there:
http://dougpiston.com/files/RUU/RUU...4k_NV_1.70_PRL58006_release_152016_signed.exe
Note for RUU:
You may wish to install HTC Sync (at least temporarily) if you haven't had prior root dealings on your current PC as it will auto-install the necessary driver for phone recognition.
_______________________________________________________________________________
Is this method applicable to HTC Desire? As I badly need to downgrade my phone. Thanks
Just confirming that this is the method that I use to unroot from 2.1? I'm not sure which radio I have, but I've never updated it.
Worked like a charm. Thanks, ready to return because of random reset loops issue. Now I hope I get a refurb that doesn't have the issue.
3.) Attach phone to PC with USB debugging on and in disk drive mode.
4.) Access the SD storage and drag the PB31IMG zip file (still fully zipped) from the desktop onto the root of the SD card (any open area, do not place into a folder).
5.) Swipe down notification bar on phone and change to charge only.
6.) Unplug phone from PC and turn off phone.
7.) Hold volume down while pressing power button to enter hboot.
8.) PB31IMG.zip should be automatically recognized in hboot. Press volume up to continue with update. Do NOT interrupt.
9.) When finished, reboot to stock 2.2 and verify the following information at Menu > Settings > About Phone:
What is the significance of having the phone in USB debugging mode to copy over the zip file?
I only ask because I'm restoring my phone back to stock from a different computer than I did my root and whatnot, so it's bugging me about installing drivers when I'm in USB debugging mode.
Mainly typed it that way because that's the way I always do it. I'm not sure if you MUST have debugging enabled or not b/c I've always done it out of habit. Try it without if you want, as long as you can get the file on the card you're good.
Also, you could use a USB card reader or a laptop with an SD slot (along with a micro to SD adapter) and get the file on there that way.
is this still the best way to go back to stock? I don't have any stock backups and I'm tired of all these force closes I'm gettign with custom roms
yes, this is the best way if you want to be stock and not rooted.
Do this and reroot using Unrevoked. That'll give you what you're looking for.
We've been tracking upcoming products and ranking the best tech since 2007. Thanks for trusting our opinion: we get rewarded through affiliate links that earn us a commission and we invite you to learn more about us.