[One (M7) General] jay_ntwr:
*Now Working for 4.3 Update* Will require an up-to-date install of 4.1.x first and then after re-boot, it will update to 4.3 (read post on next page).

Warning:

Because of of how weird step 7 was, I'd recommend NOT INSTALLING THE OTA and just waiting for a ROM to have the changes incorporated. This is the last time I'll install an OTA I think as the whole thing was sketchy at best. However, if you just insist doing the OTA, that's how I did it. It may not work for you. You'll probably brick your phone as I may have just gotten lucky.

Background:

I'm certainly not a developer but can wiggle my way around XDA and figure out what to do and how to do it from time to time without having to ask too many questions. This morning I got the notification that an OTA (over the air) Update was available for my HTC One Dev Edition (running the stock ROM) and I simply downloaded it and tried to flash the zip in Clockwork like I've done with countless other updated nightlies on various phones. It didn't work.

Solution:

I figured out after researching that the custom recovery wouldn't allow the OTA to be flashed and that the stock recovery would be needed to flash the OTA update. I also realized that it took a bunch of different threads to figure out how to make it all work and there didn't seem to be one thread on the HTC One forum that discussed how to do it so I figured I may as well write up what I did to help someone else--after all, so many folks have helped me on this forum and I've rarely had much to contribute of any real depth anyway--just repeating what others already had taught me.

How to:

You need to re-flash the original recovery to your phone so that CWM or TWRP are no longer your recovery. Obviously, now is the time to do a backup and I'd put it somewhere other than on the phone in case you really mess this up.

1. Get the stock recovery bits here https://www.dropbox.com/s/9wbux6a4kn0ndz9/StockRecovery-signed.zip

2. You'll need to un-pack the rar and there is a text file that has the instructions.

3. Of course, I didn't follow the instructions, I just plugged my phone into USB with debugging on and fired up cmd, changed into the directory where I extracted the files, cd'd into fastboot and typed "adb reboot bootloader" and waited until the phone rebooted into bootloader

4. I typed "fastboot devices" and hit enter to make sure I was connected to the phone still

5. Cd.. to get back to where the .bat files are and type install-recovery-windows.bat and the stock recovery is flashed to your HTC One.

6. Now unplug the thing and reboot and you'll get the notification again that the OTA update is ready to install and it will start to install.

7. Mine locked up. That's right, the damn OTA update stopped at about 1/4 of the way through. I figured I bricked the phone. I always figure I bricked it if something doesn't go exactly how I thought it would but I've never actually done it to any of my 6 or so devices. Then I found this thread: http://xdaforums.com/showthread.php?t=2306996&page=2 and I turned off the phone by holding down the power and restarting it. It got all the way through and hung again so I reset the phone again. Then, it rebooted a few times and looked like it was going to never work right again, but I just let it keep rebooting and left it be and after a few minutes, less than 10, probably more than 5, I was back up and running and saw the android applications updating as expected after an update.

8. Now you'll want to re-flash your custom rom (TWRP, CWM) and I did that with Hasoon's All-in-one tool.

9. Re-get Root. You can do that with Hasoon's tool I suppose or however you prefer to root.

AGAIN:

Because of of how weird step 7 was, I'd recommend NOT INSTALLING THE OTA and just waiting for a ROM to have the changes incorporated. This is the last time I'll install an OTA I think as the whole thing was sketchy at best. However, if you just insist doing the OTA, that's how I did it. It may not work for you. You'll probably brick your phone as I may have just gotten lucky.

Hopefully someone will come up with a better way to do this and start a new thread and we can delete this one forever.