Develop Bugs

[Q] JB OTA fails with the red rectangular

I have an unlocked HTC One X, running Stock Rom and CMW recovery. CID 621. (never installed any custom roms, only CMW recovery and unlocking the phone)
I haven't updated my phone in a while since OTA failed due to the recovery. Last night I reverted back to the stock recovery and updated, successfully, OTA version 2.18.751.7.
After updating my One X informs me there's a JB OTA update, 3.14.751.20 but when I try to run it, it reboots, shows the green progress bar for about 30 seconds then shows the red rectangular of failure (rebooting starts up the device normally).
I tried reflashing the stock recovery, tried the recovery from the latest RUU for my CID (RUU_ENDEAVOR_U_ICS_40_S_Chunghwa_2.17.751.2_Radio_2.1204.136.21_release_275588_signed) but the OTA update keeps failing.
I also tried disabling SuperSU and used Voodoo Root Keeper to disable root, still the same red rectangular. Tried using the nandroid backup and running through the updates again, but same issue (2.18.751.7 installs correctly, but 3.14.751.20 fails).
Any help would be appreciated!
Thanks,
Maya

mayashoval said:
I have an unlocked HTC One X, running Stock Rom and CMW recovery. CID 621. (never installed any custom roms, only CMW recovery and unlocking the phone)
I haven't updated my phone in a while since OTA failed due to the recovery. Last night I reverted back to the stock recovery and updated, successfully, OTA version 2.18.751.7.
After updating my One X informs me there's a JB OTA update, 3.14.751.20 but when I try to run it, it reboots, shows the green progress bar for about 30 seconds then shows the red rectangular of failure (rebooting starts up the device normally).
I tried reflashing the stock recovery, tried the recovery from the latest RUU for my CID (RUU_ENDEAVOR_U_ICS_40_S_Chunghwa_2.17.751.2_Radio_2.1204.136.21_release_275588_signed) but the OTA update keeps failing.
I also tried disabling SuperSU and used Voodoo Root Keeper to disable root, still the same red rectangular. Tried using the nandroid backup and running through the updates again, but same issue (2.18.751.7 installs correctly, but 3.14.751.20 fails).
Any help would be appreciated!
Thanks,
Maya
Click to expand...
Click to collapse
Have you tried relocking your bootloader? 'fastboot oem lock'

Also, maybe try flashing the stock kernel as well?

Did you remove anything?
You might try running an RUU if you can one one new enough, or restoring a backup (there are threads here for both backups and RUU, but look on htcruu.com, the device is endeavoru)

ArmedandDangerous said:
Also, maybe try flashing the stock kernel as well?
Click to expand...
Click to collapse
I'm hesitant about flashing a kernel, as I did not change the original stock one, and it feels too risky.

BenPope said:
Did you remove anything?
You might try running an RUU if you can one one new enough, or restoring a backup (there are threads here for both backups and RUU, but look on htcruu.com, the device is endeavoru)
Click to expand...
Click to collapse
I thought about that, but the most recent RUU for my CID is older than what getvar is telling me (INFOversion-main: 2.18.751.7. latest RUU I found is: RUU_ENDEAVOR_U_ICS_40_S_Chunghwa_2.17.751.2_Radio_2.1204.136.21_release_275588_signed).
As to relock, I went through quite a few similar threads and in all relocking did not make any difference. Also, if that was the case, I don't think the first OTA update would have gone through.

mayashoval said:
I thought about that, but the most recent RUU for my CID is older than what getvar is telling me (INFOversion-main: 2.18.751.7. latest RUU I found is: RUU_ENDEAVOR_U_ICS_40_S_Chunghwa_2.17.751.2_Radio_2.1204.136.21_release_275588_signed).
As to relock, I went through quite a few similar threads and in all relocking did not make any difference. Also, if that was the case, I don't think the first OTA update would have gone through.
Click to expand...
Click to collapse
I think the update to hboot requires it to be locked, your previous update was most likely ok with the hboot it was on.

mayashoval said:
I thought about that
Click to expand...
Click to collapse
Then look for a backup of your ROM version in the backup thread.

BenPope said:
Then look for a backup of your ROM version in the backup thread.
Click to expand...
Click to collapse
Sorry to be a noob but what do you mean? I thought I couldn't use a backup older than the one listed under "main version". Or am I confusing things?
Edit:
Can I install the most recent RUU?
INFOversion-main: 2.18.751.7.
latest RUU is: RUU_ENDEAVOR_U_ICS_40_S_Chunghwa_2.17.751.2_Radio_ 2.1204.136.21_release_275588_signed.

Update: locking the phone did not help
I locked the phone, but the update still fails at the same location. The green bar expands for about 20 seconds, covering about a quarter of the bar, and the the red triangle appears.

You could always attempt to update the firmware/hboot manually download it here for your cid http://forum.xda-developers.com/showthread.php?t=1957376
Or there is a tool here http://forum.xda-developers.com/showthread.php?t=1924003

sorry for being a noob
gffmac said:
You could always attempt to update the firmware/hboot manually download it here for your cid http://forum.xda-developers.com/showthread.php?t=1957376
Or there is a tool here http://forum.xda-developers.com/showthread.php?t=1924003
Click to expand...
Click to collapse
the tool looks easy enough, but they ask to include the custom JB rom of my choice. I want the Stock update, so what do I do?
The manual update list points to a broken link. I did find it somewhere else. How do I manually update? are these the commands?
fastboot oem rebootRUU
fastboot flash zip firmware.zip
do I need to unlock my phone again? can I use the same Unlock_code.bin I got from HTC last time (saved it) or do I have to go through the process again?
I'm asking all these questions because I don't want to end up with a bricked phone.

mayashoval said:
the tool looks easy enough, but they ask to include the custom JB rom of my choice. I want the Stock update, so what do I do?
The manual update list points to a broken link. I did find it somewhere else. How do I manually update? are these the commands?
fastboot oem rebootRUU
fastboot flash zip firmware.zip
do I need to unlock my phone again? can I use the same Unlock_code.bin I got from HTC last time (saved it) or do I have to go through the process again?
I'm asking all these questions because I don't want to end up with a bricked phone.
Click to expand...
Click to collapse
There are a couple of really good stock looking ROMs on there with enhanced performance. There's one mentioned in my sig, it may also be the easiest route out of your issue using the tool posted above

exocetdj said:
There are a couple of really good stock looking ROMs on there with enhanced performance. There's one mentioned in my sig, it may also be the easiest route out of your issue using the tool posted above
Click to expand...
Click to collapse
Yes I am running to issues... turns out that manually flashing the firmware.zip just got my phone into a bootloop since it turns out you must install a custom rom after it. I did not want to install a custom rom just to get the OTA update to install. now my phone keeps rebooting and I'm waiting for ADHD to download (takes FOREVER! for some reason).
This really sucks. I wanted to stay with stock, and it looks like I can't even go back anymore, can't even restore with a RUU.

mayashoval said:
Yes I am running to issues... turns out that manually flashing the firmware.zip just got my phone into a bootloop since it turns out you must install a custom rom after it. I did not want to install a custom rom just to get the OTA update to install. now my phone keeps rebooting and I'm waiting for ADHD to download (takes FOREVER! for some reason).
This really sucks. I wanted to stay with stock, and it looks like I can't even go back anymore, can't even restore with a RUU.
Click to expand...
Click to collapse
There should be a RUU out for your region soonish but Until then, a stock style custom rom is a brilliant option beleive me

exocetdj said:
There should be a RUU out for your region soonish but Until then, a stock style custom rom is a brilliant option beleive me
Click to expand...
Click to collapse
don't really have a choice now...
downloading maXimus as per your recommendation (and because ADHD will take another 9 hours

You can restore an older backup, it's just like installing a custom ROM.
You might also be able to install a 2.17 RUU on 2.18, I'm not sure the hboot was updated. It's also possible to dissect an RUU and install the bits manually.
You have a few options.

i am having the same issue, I have the stock rom (never flashed) on a rooted phone. So i relocked the bootloader and flashed stock recovery, but im getting the red triangle when installing the update.
OP, did you already find a solution?

plaktoets said:
i am having the same issue, I have the stock rom (never flashed) on a rooted phone. So i relocked the bootloader and flashed stock recovery, but im getting the red triangle when installing the update.
OP, did you already find a solution?
Click to expand...
Click to collapse
Sorry did not find a solution. Ended up installing a custom rom, even though I wanted to keep using the stock one

plaktoets said:
i am having the same issue, I have the stock rom (never flashed) on a rooted phone. So i relocked the bootloader and flashed stock recovery, but im getting the red triangle when installing the update.
OP, did you already find a solution?
Click to expand...
Click to collapse
I hope you did this the other way around......first flash the recovery and the relock the bootloader.....
But if you are on stock rom, kernel and recovery you do not have to relock the bootloader, it updates fine with a unlocked one.

Need some info..

Im comming from a Nexus 4. At this moment i am using stock rom with s-on on my international htc one m8. Only thing i did is rooting it and flashed a custom recovery from philz. Now my question is, how can i update to the newest firmware. It is a bit complicated compared to the nexus 4, so i dont want to do anything wrong. Ive red about relocking the bootloader and some orher stuff, but dont get it. I would appreciate any help and info i can get.. i put a screenshot of my current setup..
Sent from my HTC One_M8 using XDA Premium 4 mobile app

When you say "firmware" do you just mean the Android software version? If so, just flash in recovery a stock rooted ROM, or custom ROM based on the newer software. No need to mess with relocking the bootloader to install an official OTA update or RUU. In my opinion, here is little to no good reason to install official updates on a modded/rooted phone.
Reason I ask the first question above, many of the folks here refer to "firmware" as the other modules deployed with the OS, including hboot, radio, and other media modules. Flashing this is still possible on a modded device, just a little different.

redpoint73 said:
When you say "firmware" do you just mean the Android software version? If so, just flash in recovery a stock rooted ROM, or custom ROM based on the newer software. No need to mess with relocking the bootloader to install an official OTA update or RUU. In my opinion, here is little to no good reason to install official updates on a modded/rooted phone.
Reason I ask the first question above, many of the folks here refer to "firmware" as the other modules deployed with the OS, including hboot, radio, and other media modules. Flashing this is still possible on a modded device, just a little different.
Click to expand...
Click to collapse
Thanks for the answer. by updating the firmware i mean the complete software, just like we get it OTA. The nexus was peace of cake, just install thr new rom and radios and you were done. But this htc thing needs some practicing i think.

soylukral said:
Thanks for the answer. by updating the firmware i mean the complete software, just like we get it OTA. The nexus was peace of cake, just install thr new rom and radios and you were done. But this htc thing needs some practicing i think.
Click to expand...
Click to collapse
That part is not much different with the M8. If you want a new ROM, just flash a stock rooted ROM or custom in recovery. If you want a new radio, just get it from the following thread and flash it. Only difference, if you need S-off. so look for either firewater or sunshine s-off method.
http://forum.xda-developers.com/showthread.php?t=2736921
Yes, you can install the "complete" firmware package (search around and you will find them, usually flashed with fastboot/adb). But these are usually not necessary. If a ROM requires a newer firmware package, it will be discussed in that ROM thread.

redpoint73 said:
That part is not much different with the M8. If you want a new ROM, just flash a stock rooted ROM or custom in recovery. If you want a new radio, just get it from the following thread and flash it. Only difference, if you need S-off. so look for either firewater or sunshine s-off method.
http://forum.xda-developers.com/showthread.php?t=2736921
Yes, you can install the "complete" firmware package (search around and you will find them, usually flashed with fastboot/adb). But these are usually not necessary. If a ROM requires a newer firmware package, it will be discussed in that ROM thread.
Click to expand...
Click to collapse
So what i understand is, as long as you stay stock rooted, you can update with a stock rooted rom without having s-off. Am i right? What i dont understand is that they are talking about you cant update from 4.4.2 1.54 to 4.4.3 2.22 without relocking your bootloader..

soylukral said:
So what i understand is, as long as you stay stock rooted, you can update with a stock rooted rom without having s-off. Am i right? What i dont understand is that they are talking about you cant update from 4.4.2 1.54 to 4.4.3 2.22 without relocking your bootloader..
Click to expand...
Click to collapse
You seem to be talking about 2 different things.
If you are talking about updating (flashing) a stock rooted ROM, that would be a user created ROM posted here in Development. If that is the case, you can flash whatever ROM you want from Development while S-on.
But if you are talking about installing official OTA updates, you need to relock your bootloader with s-on; and you also need to revert to stock recovery. You can flash these with the bootloader unlocked with S-off (stock recovery is still required). The other catch is, that if you change or remove any system files while rooted, an OTA will not install.
My opinion is not to install OTAs on a rooted phone. Its extra steps and extra hassle (relocking bootloader, re-installing stock recovery). Plus, you never know what exploits have been patched with the new OTAs. For instance, the more recent hboots plugged the firewater s-off. Its a much better idea to just flash stock rooted or custom ROMs posted in Development, as they often get updated very quickly to the new software versions anyway. And that is what XDA is all about, anyway.

redpoint73 said:
You seem to be talking about 2 different things.
If you are talking about updating (flashing) a stock rooted ROM, that would be a user created ROM posted here in Development. If that is the case, you can flash whatever ROM you want from Development while S-on.
But if you are talking about installing official OTA updates, you need to relock your bootloader with s-on; and you also need to revert to stock recovery. You can flash these with the bootloader unlocked with S-off (stock recovery is still required). The other catch is, that if you change or remove any system files while rooted, an OTA will not install.
My opinion is not to install OTAs on a rooted phone. Its extra steps and extra hassle (relocking bootloader, re-installing stock recovery). Plus, you never know what exploits have been patched with the new OTAs. For instance, the more recent hboots plugged the firewater s-off. Its a much better idea to just flash stock rooted or custom ROMs posted in Development, as they often get updated very quickly to the new software versions anyway. And that is what XDA is all about, anyway.
Click to expand...
Click to collapse
sorry about asking this many questions but, the main thing is that i want to update to the latest released software 4.4.3 2.22. can you discribe me the steps i have to follow. because im sorry but it is still not 100% clear. believe me i flashed many many roms kernels tweaks and lots of other stuff, but comming from a nexus device this is a nightmare.

soylukral said:
sorry about asking this many questions but, the main thing is that i want to update to the latest released software 4.4.3 2.22. can you discribe me the steps i have to follow. because im sorry but it is still not 100% clear. believe me i flashed many many roms kernels tweaks and lots of other stuff, but comming from a nexus device this is a nightmare.
Click to expand...
Click to collapse
i was looking at ARHD 10.1 with the latest 4.4.3 2.22 software, can i just flash this over my stock rooted 4.4.2 1.54?

soylukral said:
sorry about asking this many questions
Click to expand...
Click to collapse
No worries, that is what this forum is for!
One thing I was not fully aware of, while ARHD will flash just fine over your stock ROM; folks seem to be having trouble with Android 4.4.3 (software 2.22) based ROMs and old "firmware" (reference Post #2, paragraph 2 above). This includes issues with no sound (which I suspect the "media" module within the firmware package is the culprit).
So if you want to flash a 2.22 based ROM, it looks like you need to S-off and flash the firmware package before flashing ARHD. Details on flashing the firmware package can be found by reading the ARHD thread, or also (more easily) by referring to Section 3 of this guide: http://forum.xda-developers.com/htc-one-m8/general/vomerguides-m8-bootldr-unlock-s-off-t2800727/post53807690
Updating the "firmware" package is often not needed to just flash a custom ROM. This happens to be one of the exceptions.

redpoint73 said:
No worries, that is what this forum is for!
One thing I was not fully aware of, while ARHD will flash just fine over your stock ROM; folks seem to be having trouble with Android 4.4.3 (software 2.22) based ROMs and old "firmware" (reference Post #2, paragraph 2 above). This includes issues with no sound (which I suspect the "media" module within the firmware package is the culprit).
So if you want to flash a 2.22 based ROM, it looks like you need to S-off and flash the firmware package before flashing ARHD. Details on flashing the firmware package can be found by reading the ARHD thread, or also (more easily) by referring to Section 3 of this guide: http://forum.xda-developers.com/htc-one-m8/general/vomerguides-m8-bootldr-unlock-s-off-t2800727/post53807690
Updating the "firmware" package is often not needed to just flash a custom ROM. This happens to be one of the exceptions.
Click to expand...
Click to collapse
thanks anyway, you did help me get wiser. what i understand is that S-OFF is a must have to be that free as on the nexus 4. i will look further. thanks again..

soylukral said:
thanks anyway, you did help me get wiser. what i understand is that S-OFF is a must have to be that free as on the nexus 4. i will look further. thanks again..
Click to expand...
Click to collapse
S-off is usually not needed to flash a ROM itself. But yes, its a must if you want to flash radio, hboot, firmware packages, and some other things.

[Q] Please help: Updating Firmware HTC One M8

I have the international version of the HTC One M8 so At&T I have 4.4.2 but I want to get Lollipop. I've looked into it and it seems I have a long list of upgrades to make. I have to first update my hboot somehow to the latest one so I can get a newer version of TWRP because I can't use those right now, I just get stuck booting into recovery. To do that I need to update my firmware so I looked into a firmware.zip package but it says I need to relock my bootloader. I'm not particularly willing to have to go through that process. Once I get a newer hboot I need the latest recovery to then flash the update? I'm really confused about all the things I need to do and I need a step by step of things I need to do in order because I don't want to end up bricking my phone somewhere along the way. I've never updated hboot or my firmware I don't think I've just been using AOKP rom with an older recovery TWRP. How do I update all my firmware/software to the latest possible for my HTC One M8? I think the main reason I'm lost is because I don't know what to start with. Right now just pretend I have just my old rom and recovery, where do I go from there? Also I want to get the latest Venom Rom for the M8 if that means anything. They require 5.x.x firmware
Also I probably put this thread in the long location -_-

Tetrisvoid said:
I have the international version of the HTC One M8 so At&T I have 4.4.2 but I want to get Lollipop. I've looked into it and it seems I have a long list of upgrades to make. I have to first update my hboot somehow to the latest one so I can get a newer version of TWRP because I can't use those right now, I just get stuck booting into recovery. To do that I need to update my firmware so I looked into a firmware.zip package but it says I need to relock my bootloader. I'm not particularly willing to have to go through that process. Once I get a newer hboot I need the latest recovery to then flash the update? I'm really confused about all the things I need to do and I need a step by step of things I need to do in order because I don't want to end up bricking my phone somewhere along the way. I've never updated hboot or my firmware I don't think I've just been using AOKP rom with an older recovery TWRP. How do I update all my firmware/software to the latest possible for my HTC One M8? I think the main reason I'm lost is because I don't know what to start with. Right now just pretend I have just my old rom and recovery, where do I go from there? Also I want to get the latest Venom Rom for the M8 if that means anything. They require 5.x.x firmware
Also I probably put this thread in the long location -_-
Click to expand...
Click to collapse
You better run a RUU.exe file of latest official HTC's ROM (Lollipop). If you have an unlocked bootloader, the best option would be to be S-OFF so you could flash any RUU without relocking the bootloader.
Remember than flashing a RUU will update your firmware, radio and hboot but will erase your phone's content.
Once your device is updated, you just have to reflash TWRP (latest version) and flash the ROM you want.
EDIT: If you manage to get S-OFF you could simply flash latest firmware directly. I would highly recommend you to use Sunshine. It's a paid app but it worth it.
Enviado desde mi HTC One M8 mediante Tapatalk

Ok I will try that

SergioRmz said:
You better run a RUU.exe file of latest official HTC's ROM (Lollipop). If you have an unlocked bootloader, the best option would be to be S-OFF so you could flash any RUU without relocking the bootloader.
Remember than flashing a RUU will update your firmware, radio and hboot but will erase your phone's content.
Once your device is updated, you just have to reflash TWRP (latest version) and flash the ROM you want.
EDIT: If you manage to get S-OFF you could simply flash latest firmware directly. I would highly recommend you to use Sunshine. It's a paid app but it worth it.
Enviado desde mi HTC One M8 mediante Tapatalk
Click to expand...
Click to collapse
I looked into sunshine but I can't get it. I did get a copy of firewater though somehow but I've tried to run the commands to use firewater but after the last command ("yes") my adb runs into some sort of loop where it prints "y" repeatedly and I can't enter commands because it replaces what I type with a y and you can watch what you typed fly away. Is there any other way to s-off other than Sunshine that actually works?

I'm kind of forced into having to pay for Sunshine. There is no other way for the version I'm on. Will do and return with an update. Might take a while though

I needed to switch to a more stocky rom for sunshine to work, i got android revolution and apparantly i'm already on lollipop?? it says 5.0.1 but that can't be right...

SergioRmz said:
You better run a RUU.exe file of latest official HTC's ROM (Lollipop). If you have an unlocked bootloader, the best option would be to be S-OFF so you could flash any RUU without relocking the bootloader.
Remember than flashing a RUU will update your firmware, radio and hboot but will erase your phone's content.
Once your device is updated, you just have to reflash TWRP (latest version) and flash the ROM you want.
EDIT: If you manage to get S-OFF you could simply flash latest firmware directly. I would highly recommend you to use Sunshine. It's a paid app but it worth it.
Enviado desde mi HTC One M8 mediante Tapatalk
Click to expand...
Click to collapse
Hi I'm having issues getting a rom that Sunshine supports. Currently I switched over to an old CM11 build for 4.4.x hoping Sunshine would take it but it isn't close enough to stock, and I can't find a single stock rom that isn't an RUU requiring S-Off. I've searched around many threads, http://forum.xda-developers.com/showthread.php?t=2694994 seemed close but it doesn't have what I need. Could you help me solve this issue? Also when I flashed CM11 and booted things were crashing in a loop and after restart it seems to be working no issue, except that google play services isn't supported, so i'm assuming Gapps failed somehow. I'm not planning to stick to CM for long I just need to find a rom that sunshine will take.

ok i found and flashed a nandroid that is appropriate.
I have s-off now.
New problem:
All RUU files I try do not work.

I'm trying to flash a new RUU but the file is too big for Fastboot. I found a method where you copy the zip to the ext_sd and I did that and my phone crashed or something, it went to a black screen and I simulated the battery pull and rebooted. The file was no longer in ext_sd. I'm going to try this again and watch what happens....
this has been a long headache (7 hours straight now)

alright i'm copying and my phone froze completely. currently stuck. Its at 66% transfer

alright something is happening. Screen went dark again, but now the stock wallpaper for the M8 is covering the screen, maybe the launcher restarted and got stuck.

and now the screen is dark again. This isn't working out.

I tried using an RUU exe file rather than a zip, but it stopped in the middle of flashing and said it failed, and that I was using the wrong RUU, when that was the only one available for my ID

I'm really tempted to go into TWRP and flash the zip manually...

Tmobile One m9 MM update available today. How to take the OTA if rooted with twrp?

I see the One m9 Marshmallow update is out today.
If we are currently rooted with TWRP and S-OFF, what do we need to do to get the OTA?
I assume flash the stock recovery back first, take the OTA, then reflash twrp and root again?
Did I miss anything?

You have to be 100% stock (other than s-off) to take an OTA, which means running a RUU.
But being s-off, why not just wait until the firmware gets posted and update manually?

iElvis said:
You have to be 100% stock (other than s-off) to take an OTA, which means running a RUU.
But being s-off, why not just wait until the firmware gets posted and update manually?
Click to expand...
Click to collapse
Ah yes of course... good call. Thanks

iElvis said:
You have to be 100% stock (other than s-off) to take an OTA, which means running a RUU.
But being s-off, why not just wait until the firmware gets posted and update manually?
Click to expand...
Click to collapse
How would you update manually?

Manually - in case of S-OFF - means flashing firmware that has e.g. been extracted from the OTA using fastboot.
In such a case it is even possible to exchange the stock recovery by the latest TWRP, to be able to flash custom ROMs right away after doing the manual upgrade.
As those named firmware zip-files in most cases you're going to find around this forum, are no longer files which are signed by HTC they can only be flashed if your device got S-OFF'd.
That's as far as a brief explanation of the term "manually" is possible.
Send by the swarm intelligence of my coffee machine ?.

Properly restoring stock system?

Hey everyone, I'm new to HTC devices so hoping to clarify a couple things. I read through the PSAs and the stickies but I'm still a little confused.
Unlocked, s-off, and assuming I don't care about personal data wipe, if I modify system and want to go back to stock system (no relock or s-on) can I just restore a stock system img backup in twrp? Is there a quicker way to go about this? Should I wipe system prior to doing this or does it not matter? I'm simply trying to remove audio mods that broke boomsound
Also, when it comes to updating, do you have to relock to accept an ota after restoring stock sys/recovery with s-off? Can you just flash the firmware zip inside of the OTA if you want a stock update while s-off or are there complications to this?
Lastly, can you use an RUU from a newer firmware than what you're currently running or does it have to be matching?
Thanks

RUU is a good method
for unlocked edition:
http://forum.xda-developers.com/htc-10/how-to/unlocked-official-ruu-t3378540
for Verizon:
http://forum.xda-developers.com/htc-10/how-to/verizon-official-ruu-1-19-605-9-t3377586
will get you back to stock, You will have to reflash twrp however.
But it will keep s-off.
If you are s-off you can flash anything. regardless of what you are currently on.
From the other threads about updating. As long as your recovery is stock you should be able to take OTA's.

Noob766 said:
RUU seen here http://forum.xda-developers.com/htc-10/how-to/unlocked-official-ruu-t3378540
will get you back to stock, You will have to reflash twrp however.
But it will keep s-off.
If you are s-off you can flash anything. regardless of what you are currently on.
From the other threads about updating. As long as your recovery is stock you should be able to take OTA's.
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Watch out pointing to ruu files if you do not know the specific details of the device. WWE devices shoudp not flash sprint or verizon ruu files. Those things might brick the radio ! Being s-off doesn't instantly mean you can flash ANYTHING !
flashing a ruu is fine but keep it in line with your original firmware/build !
s-on : you can only flash a ruu that has the same firmware or a higher one as the devices firmware, you can not downgrade the firmware/bootloader
s-off : you can change cid and mid, convert the phone, flash different region firmware and downgrade the bootloader.
And no you do not have to relock anything. Just the stock rom/image and recovery is enough to enable ota updates

So, for a HTC noob, after flashing twrp/root, maybe changing system, how do you backup and restore back to stock? I can't find a clear guide on this, thanks
Sent from my HTC 10 using XDA-Developers mobile app

So I can extract the full FW from ota and flash it to upgrade without keeping personal data right? Will this update everything or just system partition? (do I have to find radio updates elsewhere?)
And do I have to wipe anything prior to restoring backup in TWRP for a clean install? Mega noob questions

gsw5700 said:
So, for a HTC noob, after flashing twrp/root, maybe changing system, how do you backup and restore back to stock? I can't find a clear guide on this, thanks
Sent from my HTC 10 using XDA-Developers mobile app
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Did you ever figure it out? I'm in the same boat as you. With past phones, I've always used Odin and LGUP. I have no idea how to revert on my HTC 10.

rebelde80 said:
Did you ever figure it out? I'm in the same boat as you. With past phones, I've always used Odin and LGUP. I have no idea how to revert on my HTC 10.
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I answered this in the thread that you started.