[SOLVED] Just restore to stock

[gskill150]

SOLVED - THANKS!

Dear community,

Goal: I want to put a HTC One M8 device into stock. The phone used to be unlocked before and had a custom rom (think it was LineAge).
I already made it to restore it to stock by following the tutorial here in this forum.
Everything fine, but WIFI and bluetooth do not work, I cannot switch them on. I have read that this may be caused by an incompatible firmware version?
Please understand, that I am very new to the topic and have read a lot of stuff, tutorials and because of so many different information and missing experience from my side, I am not sure what to do.

fastboot getvar all
(bootloader) version: 0.5
(bootloader) version-bootloader: 3.19.0.0000
(bootloader) version-baseband: 1.25.214500021.06G
(bootloader) version-cpld: None
(bootloader) version-microp: None
(bootloader) version-main: 4.16.401.13
(bootloader) version-misc: PVT SHIP S-ON
(bootloader) serialno: ***
(bootloader) imei: ***
(bootloader) imei2: Not Support
(bootloader) meid: 00000000000000
(bootloader) product: m8_ul
(bootloader) platform: hTCBmsm8974
(bootloader) modelid: 0P6B10000
(bootloader) cidnum: HTC__203
(bootloader) battery-status: good
(bootloader) battery-voltage: 0mV
(bootloader) partition-layout: Generic
(bootloader) security: on
(bootloader) build-mode: SHIP
(bootloader) boot-mode: FASTBOOT
(bootloader) commitno-bootloader: f063fb42
(bootloader) hbootpreupdate: 11
(bootloader) gencheckpt: 0
all: Done!
finished. total time: -0.000s​

The phone is now relocked and I cannot access TWRP anymore. Trying to reinstall it using fastboot throws out the following lines:

fastboot flash recovery twrp-3.2.3-1-m8.img
target reported max download size of 1826414592 bytes
sending 'recovery' (20168 KB)...
OKAY [ 1.810s]
writing 'recovery'...
(bootloader) signature checking...
FAILED (remote: signature verify fail)
finished. total time: 2.528s​

Think because the bootloader is locked?
I have really no clue how to proceed.

 

[redpoint73]

I already made it to restore it to stock by following the tutorial here in this forum.
Everything fine, but WIFI and bluetooth do not work, I cannot switch them on. I have read that this may be caused by an incompatible firmware version?

Probably correct, that mostly likely, you restored the wrong TWRP backup version (not compatible with the firmware on the phone - firmware is not the same thing as the ROM or TWRP backup - that part may be confusing).

What version number TWRP backup did you restore (using the guide)?

The phone is now relocked and I cannot access TWRP anymore. Trying to reinstall it using fastboot throws out the following lines:

fastboot flash recovery twrp-3.2.3-1-m8.img
target reported max download size of 1826414592 bytes
sending 'recovery' (20168 KB)...
OKAY [ 1.810s]
writing 'recovery'...
(bootloader) signature checking...
FAILED (remote: signature verify fail)
finished. total time: 2.528s​

Think because the bootloader is locked?

Yes, this is because you relocked the bootloader. You can't flash a custom recovery with a locked or relocked bootloader, by definition.

But relocking the bootloader is not part of the guide, in regards to restoring a TWRP backup. What exactly were you trying to accomplish the relocking the bootloader?

 

[gskill150]

I took the twrp-3.2.3-1-m8.img (following this instruction out of the tutorial: recommended 2.8.7.0 or latest for 4.xx.xxx.x & 6.xx.xxx.x TWRP backup)

I relocked the bootloader because I Wanted to directly flash the stock RUU using the ruu.zip on SD-Card method.
I dont know if I am allowed to post a link to another forum. According to their Tutorial, if I am S-On and want to flash the stock ruu I Need to lock the bootloader before proceeding. Being already on firmware 4.16.401.13, I dont Need to downgrade it if I flash an image 4.16.401.10 which I found in their image directories. I would try this next. Or what do you recommend?

(bootloader) version-main: 4.16.401.13
-> is this the firmware? I am afraid that I am mixing up firmware and ROM/RUU.

Thanks and best regards

 

[redpoint73]

I took the twrp-3.2.3-1-m8.img (following this instruction out of the tutorial: recommended 2.8.7.0 or latest for 4.xx.xxx.x & 6.xx.xxx.x TWRP backup)

I probably wasn't completely clear, but I was asking: what version number backup (M8 operating system version number) you tried to restore, not the TWRP version number. In other words, which file exactly did you download from the stock backup tutorial you linked? Was it 4.16.401.13 or 6.12.401.4, etc.

I relocked the bootloader because I Wanted to directly flash the stock RUU using the ruu.zip on SD-Card method.
I dont know if I am allowed to post a link to another forum. According to their Tutorial, if I am S-On and want to flash the stock ruu I Need to lock the bootloader before proceeding. Being already on firmware 4.16.401.13, I dont Need to downgrade it if I flash an image 4.16.401.10 which I found in their image directories.

It would have been best to supply this information up front, all the things you have tried, and the reason for the current status. Otherwise, you see that it is very confusing that you describe for almost the entirety of your top post about trying to restore a stock TWRP backup, but don't mention trying (or intending to) to flash the RUU? Which is a completely different path.

You can't post "clickable" links yet (think you need >10 posts). But you can post the link, then obfuscate it by changing some characters, such as "dotcom", which we can then change back, and cut/paste into the browser to see where you got the file.

I'm not certain what you mean by "their image directories". Do you mean HTC (or something else)? If you mean HTC, then I don't think you have an RUU, since HTC typically does not post RUUs for your version M8. Although there are some "leaked" ones posted by users.

So it's important to know the source of the RUU(?) file you intend to try, such as a link or at least the exact file name of what you downloaded (file size in MB or GB would also be useful to tell what it is).

(bootloader) version-main: 4.16.401.13
-> is this the firmware? I am afraid that I am mixing up firmware and ROM/RUU.

In short, yes, that is the current version number of the firmware on the phone.

When "firmware" is discussed for this device, it does not refer to the ROM or OS number. But rather, firmware is a small file that is needed for the ROM to work and includes hboot, radio, and a number of other partitions (Bluetooth, WiFI), but does not contain the ROM itself. This is confusing, as some folks like to use the terms "firmware" and "ROM" interchangeably. At least for this device, you should wipe that notion from your mind.

Flashing a custom ROM or restoring a stock TWRP backup will not touch firmware, as flashing a ROM by TWRP will only change the system and boot.img partitions, and not touch things like hboot, radio. And flashing a ROM in TWRP will also not affect the version number reported in getvar. That number will only change if you flash firmware.zip or RUU.

RUU is a complete factory image (40+ partitions) which also includes firmware. Some folks will call the RUU the "stock ROM" but you can now see, it is much more than that.

A little confusing, right?

 

[gskill150]

First of all, many thanks for your detailed help and sorry for providing incomplete information from my side. This topic is really hard to understand and confuses me a lot. Sorry for that.

I probably wasn't completely clear, but I was asking: what version number backup (M8 operating system version number) you tried to restore, not the TWRP version number. In other words, which file exactly did you download from the stock backup tutorial you linked? Was it 4.16.401.13 or 6.12.401.4, etc.

I took, 4.16.401.13 out of www DOT mega DOT nz/#!X9IjVASb!bNCxQJlDbX40cLHGlmP1qk0SaYfW93lo8jicFv81B-4

It would have been best to supply this information up front, all the things you have tried, and the reason for the current status. Otherwise, you see that it is very confusing that you describe for almost the entirety of your top post about trying to restore a stock TWRP backup, but don't mention trying (or intending to) to flash the RUU? Which is a completely different path.

Sorry for that - as written I am new to the topic and was mixing up things that do not belong together (RUU, ROM, firmware). Again in a few words: phone used to have LineAgeOS (CustomRom) and I just wanted get rid of it and restore the original android version as if I had bought the phone completely new
I tried it through TWRP because I found this tutorial here in the forum and thought this would be the right path.

You can't post "clickable" links yet (think you need >10 posts). But you can post the link, then obfuscate it by changing some characters, such as "dotcom", which we can then change back, and cut/paste into the browser to see where you got the file.

As next steps and after having relocked the bootloader I was planning to perform the steps mentioned in this tutorial (sorry it is German) in the Page: www DOT handy-faq DOT de/forum/htc-one-m8-stock-rom-wiederherstellen-via-ruu-t314727/
and doing method 1 (flashing RUU using RUU.zip) with the use of a RUU 4.16.401.10 (which can be found on www DOT androidfilehost DOT com/?fid=95916177934518148

I'm not certain what you mean by "their image directories". Do you mean HTC (or something else)? If you mean HTC, then I don't think you have an RUU, since HTC typically does not post RUUs for your version M8. Although there are some "leaked" ones posted by users.
So it's important to know the source of the RUU(?) file you intend to try, such as a link or at least the exact file name of what you downloaded (file size in MB or GB would also be useful to tell what it is).

I meant the RUUs from the other guide I have just posted above

A little confusing, right?

To be honest, now it is completely clear to me thanks to your really good explanation. Thanks mate!
So I could go for the ruu.zip flashing path to achieve what I want right?

 

[redpoint73]

I took, 4.16.401.13 out of www DOT mega DOT nz/#!X9IjVASb!bNCxQJlDbX40cLHGlmP1qk0SaYfW93lo8jicFv81B-4

That is the right number stock backup to restore (same number as firmware number - version main in getvar). I don't know why you are having issues with WiFi and Bluetooth.

Might be a problem with the firmware. Flashing RUU is probably the best approach. Not only will it restore the stock ROM, but also restore stock firmware. Which hopefully will resolve your WiFi and Bluetooth issue.

As next steps and after having relocked the bootloader I was planning to perform the steps mentioned in this tutorial (sorry it is German) in the Page: www DOT handy-faq DOT de/forum/htc-one-m8-stock-rom-wiederherstellen-via-ruu-t314727/
and doing method 1 (flashing RUU using RUU.zip) with the use of a RUU 4.16.401.10 (which can be found on www DOT androidfilehost DOT com/?fid=95916177934518148

So I could go for the ruu.zip flashing path to achieve what I want right?

That RUU should be okay. Alternately, you can flash the Marshmallow RUU, which will not only restore you to stock image, but also have the most updated (last) version. Marshmallow RUU and instructions here: https://forum.xda-developers.com/showpost.php?p=64926626&postcount=6

Note, that you should use the htc_fastboot as directed in the instructions, not the "generic" Google fastboot. The generic one can't handle the large RUU file size (about 1.5 GB).

 

[gskill150]

Alternately, you can flash the Marshmallow RUU, which will not only restore you to stock image, but also have the most updated (last) version. Marshmallow RUU and instructions here: https://forum.xda-developers.com/showpost.php?p=64926626&postcount=6

Note, that you should use the htc_fastboot as directed in the instructions, not the "generic" Google fastboot. The generic one can't handle the large RUU file size (about 1.5 GB).

Hi, thanks for your reply. I will give it a try! :good:

 

[gskill150]

Hi, thanks for your reply. I will give it a try! :good:

It worked using the guide I posted (with the ruu.exe).

Issue solved. Wifi Problem fixed. Learned a lot! Appreciating this Forum and especially your help so much. Thanks!!!

 

[redpoint73]

It worked using the guide I posted (with the ruu.exe).

Issue solved. Wifi Problem fixed. Learned a lot! Appreciating this Forum and especially your help so much. Thanks!!!

You're quite welcome. Glad it worked for you.

 

[Jjohnson0830]

Hello guys,
I have an HTC one m8 , I have been running a rooted device with custom rom which has been working terribly on my device...Now I want to return to stock rom, I have relocked bootloader and it's on s-on...I have tried out diverse RUU but all seems not working...I'm always getting this error in the process "rom update utility cannot update your andriod phone"" which i guess the ruu's have been using are not compatible with my phone...I would so much appreciate if anyone can get me the RUU executable file for my device that will be compatible with it........ Here is the fastboot getvar all details....Your prompt responses will be appreciated

(bootloader) version: 0.5
(bootloader) version-bootloader: 3.19.0.0000
(bootloader) version-baseband: 1.29.214500021.12G
(bootloader) version-cpld: None
(bootloader) version-microp: None
(bootloader) version-main:
(bootloader) version-misc: PVT SHIP S-ON
(bootloader) serialno: S**********6
(bootloader) imei: 35*************7
(bootloader) imei2: Not Support
(bootloader) meid: 00000000000000
(bootloader) product: m8_ul
(bootloader) platform: hTCBmsm8974
(bootloader) modelid: 0P6B10000
(bootloader) cidnum: T-MOB009
(bootloader) battery-status: good
(bootloader) battery-voltage: 0mV
(bootloader) partition-layout: Generic
(bootloader) security: on
(bootloader) build-mode: SHIP
(bootloader) boot-mode: FASTBOOT
(bootloader) commitno-bootloader: 76df2b54
(bootloader) hbootpreupdate: 11
(bootloader) gencheckpt: 0
all: Done!
finished. total time: 0.062s

 

[redpoint73]

I have tried out diverse RUU but all seems not working...

(bootloader) modelid: 0P6B10000
(bootloader) cidnum: T-MOB009

You can't just guess at which RUU and expect it to work. The RUU needs to match the CID/MID on your version M8. And your version M8, I'm pretty sure doesn't even have an RUU. So whatever you tried, was the wrong RUU.

Return to stock using the stock TWRP backup, where you also posted.

On that note, please don't post the same question to multiple threads. It won't get you help any faster. It just confuses you and those trying to help you. Do you really intend on checking and updating 3 different threads, if folks start helping you in different places? That never happens.

 

[Jjohnson0830]

You can't just guess at which RUU and expect it to work. The RUU needs to match the CID/MID on your version M8. And your version M8, I'm pretty sure doesn't even have an RUU. So whatever you tried, was the wrong RUU.

Return to stock using the stock TWRP backup, where you also posted.

On that note, please don't post the same question to multiple threads. It won't get you help any faster. It just confuses you and those trying to help you. Do you really intend on checking and updating 3 different threads, if folks start helping you in different places? That never happens.

Ok, pls where can i get the stock TWRP backup and how am i going to return to stock using it?
Thanks and sorry again for what happened, I mean crossing posts...I think i needed to just respond to your responses on all the 3 threads i posted...it won't repeat itself again

 

[redpoint73]

Thanks and sorry again for what happened, I mean crossing posts...I think i needed to just respond to your responses on all the 3 threads i posted...it won't repeat itself again

No, you really don't. Please.