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Flash RUU - signature checking... FAILED (remote: 12 signature failed)

Hello,
I tried to flash a RUU on my m8 but i am not successful currently.
I bought an m8 in china, last year. My sister tried an ota update, the phone lock on bot. So i tried to flash many rom but no success, every flash failed on the last step, the " verification signature checking... " with " FAILED (remote: 12 signature verify fail) ".
I unlock my bootloader but i'am s-on.
I give you my phone detail :
HTML:
> fastboot getvar all
(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: 6.12.401.4
(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: 11111111
(bootloader) battery-status: good
(bootloader) battery-voltage: 0mV
(bootloader) partition-layout: Generic
(bootloader) security: on
(bootloader) build-mode: SHIP
(bootloader) boot-mode: RUU
(bootloader) commitno-bootloader: 76df2b54
(bootloader) hbootpreupdate: 11
(bootloader) gencheckpt: 0
all: Done!
finished. total time: 0.008s
All my try have been in RUU mode (fastboot oem rebootRUU)
Can you provide me a link to a rom that can been flash on my device ?
EDIT: I bought it in china but my cidnum is "11111111" (international), someone can give me an hint of why ?
Thank a lot in advance.

Arhenion said:
Hello,
I tried to flash a RUU on my m8 but i am not successful currently.
I bought an m8 in china, last year. My sister tried an ota update, the phone lock on bot. So i tried to flash many rom but no success, every flash failed on the last step, the " verification signature checking... " with " FAILED (remote: 12 signature verify fail) ".
I unlock my bootloader but i'am s-on.
I give you my phone detail :
HTML:
> fastboot getvar all
(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: 6.12.401.4
(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: 11111111
(bootloader) battery-status: good
(bootloader) battery-voltage: 0mV
(bootloader) partition-layout: Generic
(bootloader) security: on
(bootloader) build-mode: SHIP
(bootloader) boot-mode: RUU
(bootloader) commitno-bootloader: 76df2b54
(bootloader) hbootpreupdate: 11
(bootloader) gencheckpt: 0
all: Done!
finished. total time: 0.008s
All my try have been in RUU mode (fastboot oem rebootRUU)
Can you provide me a link to a rom that can been flash on my device ?
Thank a lot in advance.
Click to expand...
Click to collapse
Since you're S-ON, you will not be able to flash RUUs or firmware below your current ROM version. You can however restore twrp backups of Lollipop ROMs which work fine with your current 6.12 Marshmallow firmware. Otherwise, you can use twrp to flash any custom ROM based on marshmallow & lollipop.
Here's a link to stock marshmallow RUU (6.12.401.4) in zip format, which you should flash from bootloader.
https://www.androidfilehost.com/?fid=24369303960687057
Cheers

I flash the twrp's recovery. I can access to it but when I try to go to install the zip file, twrp refuse to install it with "Zip file is corrupt". I double check md5 sum and they seems to be correct =( .
I also try to flash it with fastboot, just in case, and no result but with a different error: "(bootloader) zip header checking... FAILED (remote: 32 header error) "

Arhenion said:
I flash the twrp's recovery. I can access to it but when I try to go to install the zip file, twrp refuse to install it with "Zip file is corrupt". I double check md5 sum and they seems to be correct =( .
Click to expand...
Click to collapse
You don't flash RUUs with TWRP, you flash them with fastboot in RUU mode. Which you seemed to know based on your top post, so I'm not sure why you tried to flash with TWRP this time.
Arhenion said:
I also try to flash it with fastboot, just in case, and no result but with a different error: "(bootloader) zip header checking... FAILED (remote: 32 header error) "
Click to expand...
Click to collapse
You need to relock your bootloader to RUU with s-on.
Command: fastboot oem lock

Arhenion said:
I flash the twrp's recovery. I can access to it but when I try to go to install the zip file, twrp refuse to install it with "Zip file is corrupt". I double check md5 sum and they seems to be correct =( .
I also try to flash it with fastboot, just in case, and no result but with a different error: "(bootloader) zip header checking... FAILED (remote: 32 header error) "
Click to expand...
Click to collapse
I'm not sure which way you want to go, but:
1. To flash the RUU zip file:
A. You need to put it at the root of your SD CARD and rename it to 0P6BIMG.zip
B. Turn your phone off, then start it into bootloader.
C. Follow the instructions in RED to flash. You will lose all data as the RUU will format all partitions.
2. To install a custom ROM or restore a twrp-specific backup, use TWRP's install function, or restore function respectively.
Cheers

I have the same problem can not flash a RUU ....

Technoolli said:
I have the same problem can not flash a RUU ....
Click to expand...
Click to collapse
Post the results of fastboot getvar all. Edit out your serial# and IMEI (and MEID if you have one) before you post it.

xunholyx said:
Post the results of fastboot getvar all. Edit out your serial# and IMEI (and MEID if you have one) before you post it.
Click to expand...
Click to collapse
fastboot getvar all
(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:
(bootloader) imei:
(bootloader) imei2: Not Support
(bootloader) meid: 00000000000000
(bootloader) product: m8_ul
(bootloader) platform: hTCBmsm8974
(bootloader) modelid: 0P6B10000
(bootloader) cidnum: T-MOB101
(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: 0.432s

Technoolli said:
fastboot getvar all
(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:
(bootloader) imei:
(bootloader) imei2: Not Support
(bootloader) meid: 00000000000000
(bootloader) product: m8_ul
(bootloader) platform: hTCBmsm8974
(bootloader) modelid: 0P6B10000
(bootloader) cidnum: T-MOB101
(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: 0.432s
Click to expand...
Click to collapse
I'm not sure what RUUs you have tried to flash, but this is the last RUU version for your model (T-Mo Germany)
You can flash it with fastboot commands in RUU mode, or you can flash it via the SD card method.
The SD card method is easiest. Rename the .zip by deleting everything in the name of it except for 0P6BIMG (and .zip of course), put it onto your extSD, and boot to bootloader. The rest is pretty much automatic.
Note that since you are S-On, you will have to relock your bootloader first with either method. The command for that is fastboot oem lock
Good luck!

Very helpful thread. Wanted to ask for help here, but already solved the issue

Unknown baseband for HTC one m8 CID:HTC__038

Hi, can someone help me how to get back baseband version for my device. Because my device imei is lost and baseband is unknown. here details of my device:
(bootloader) version: 0.5
(bootloader) version-bootloader: 3.19.0.0000
(bootloader) version-baseband: 1.29.214500021.
(bootloader) version-cpld: None
(bootloader) version-microp: None
(bootloader) version-main: 6.15.720.2
(bootloader) version-misc: PVT SHIP S-ON
(bootloader) serialno: HT46EWM00752
(bootloader) imei:
(bootloader) imei2: Not Support
(bootloader) meid: 00000000000000
(bootloader) product: m8_ul
(bootloader) platform: hTCBmsm8974
(bootloader) modelid: 0P6B65000
(bootloader) cidnum: HTC__038
(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: 205bdca3
(bootloader) hbootpreupdate: 11
(bootloader) gencheckpt: 0

mohd syafik said:
(bootloader) version-baseband: 1.29.214500021.
Click to expand...
Click to collapse
You answered your own question right there.

redpoint73 said:
You answered your own question right there.
Click to expand...
Click to collapse
the problem is when i boot the phone into rom, there is no imei and baseband version unknown, so how to get back the imei and baseband? i have gain s-off, and i write my imei using fastboot but the problem still persist. can someone help me? please urgent

Based on someone else experience (but on other version), reflashing firmware may be able to fix it.
Download 6.15.720.2 OTA.zip and extract out the firmware.zip - http://forum.xda-developers.com/showpost.php?p=65126875&postcount=2574
run these commands :
fastboot oem rebootRUU
fastboot flash zip firmware.zip
You'll see -
if failed : FAILED (remote: 90 hboot pre-update! please flush image again immediately)
repeat fastboot flash zip firmware.zip
after it says successful ..
fastboot reboot
then see whether the problem is fixed or not.

i have htc m8 lastr night i reset my mobile after unknown imei
i have htc m8 lastr night i reset my mobile after unknown imei and baseband pls help me:crying:

[HELP] Bricked my HTC One M8 - no OS and old HBOOT version

Hello everyone, sorry for the post but I'm really desperate at the moment, so here it goes:
I wiped my phone up by mistake while doing a hard reset and now it's OS is gone. When I try to flash RUUs it says the HBOOT version is wrong, maybe too old. I've read a lot here in the forum but wasn't able to do it yet. I'll copy the getvar from my device down here so maybe u guys can help me out.
(bootloader) version-bootloader: 3.19.0.0000
(bootloader) version-baseband: 1.25.21331147A1.06G
(bootloader) version-cpld: None
(bootloader) version-microp: None
(bootloader) version-main:
(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: 0P6B11000
(bootloader) cidnum: HTC__621
(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: 3aa067db
(bootloader) hbootpreupdate: 11
(bootloader) gencheckpt: 0
Thank you so much for your help! Take care!

Having the same issue. No S-off and relocked bootloader. Can anyone help please?

That's my case too. I would really appreciate some help with this, it's freaking me out

https://forum.xda-developers.com/htc-one-m8/help/tutorial-how-to-stock-stock-twrp-t3086860
Install twrp 2.8.7.0
Restore 4.24.709.3 stock backup
Install 4.24.709.3 stock recovery
After boot, OTA to 6.20.709.2

I am trying the way you showed but keep getting the message FAILED (remote: signature verify fail)
By the way my Laptop is Windows 10, don't know if it's a matter.
Thank you so much!
ckpv5 said:
https://forum.xda-developers.com/htc-one-m8/help/tutorial-how-to-stock-stock-twrp-t3086860
Install twrp 2.8.7.0
Restore 4.24.709.3 stock backup
Install 4.24.709.3 stock recovery
After boot, OTA to 6.20.709.2
Click to expand...
Click to collapse

igor.almc said:
I am trying the way you showed but keep getting the message FAILED (remote: signature verify fail)
By the way my Laptop is Windows 10, don't know if it's a matter.
Thank you so much!
Click to expand...
Click to collapse
At what stage are you getting this message? When trying to flash the stock recovery?
If so post the results of fastboot getvar all minus your serial# and IMEI (and MEID if you have one ~ only CDMA devices do)
I think you may be trying to flash the wrong recovery for your device.

(bootloader) version: 0.5
(bootloader) version-bootloader: 3.19.0.0000
(bootloader) version-baseband: 1.25.21331147A1.06G
(bootloader) version-cpld: None
(bootloader) version-microp: None
(bootloader) version-main:
(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: 0P6B11000
(bootloader) cidnum: HTC__621
(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: 3aa067db
(bootloader) hbootpreupdate: 11
(bootloader) gencheckpt: 0
all: Done!

yes, even when I try to flash the new TWRP file this message appears
C:\Users\DELL\Desktop\RUU>fastboot flash recovery twrp-2.8.7.0-m8.img
target reported max download size of 1826283520 bytes
sending 'recovery' (17020 KB)...
OKAY [ 1.538s]
writing 'recovery'...
(bootloader) signature checking...
FAILED (remote: signature verify fail)
finished. total time: 2.188s
I guess it's because my phone is relocked? Don't know I'm really confused

Yes, the signature verify fail error is due to relocked bootloader.
You can only install TWRP with an unlocked bootloader. TWRP is an unsigned file. By definition, you can't flash an unsigned recovery with a locked (and also relocked) bootloader. This is the very meaning and purpose of a locked bootloader.

I see... So I must unlock the bootloader again, flash and Install twrp 2.8.7.0, restore 4.24.709.3 stock backup, install 4.24.709.3 stock recovery and then relock the bootloader?
And for unlocking it I have to follow the same way for the first time? HTCdev, etc...?

igor.almc said:
yes, even when I try to flash the new TWRP file this message appears
C:\Users\DELL\Desktop\RUU>fastboot flash recovery twrp-2.8.7.0-m8.img
target reported max download size of 1826283520 bytes
sending 'recovery' (17020 KB)...
OKAY [ 1.538s]
writing 'recovery'...
(bootloader) signature checking...
FAILED (remote: signature verify fail)
finished. total time: 2.188s
I guess it's because my phone is relocked? Don't know I'm really confused
Click to expand...
Click to collapse
what about flashing the marshmallow RUU.zip ??
it's signed you need a relocked bootloader to flash it on s-on device
here is the RUU
https://www.androidfilehost.com/?fid=24438995911967316
and here is how to flash ( but use the above RUU )
http://forum.xda-developers.com/showpost.php?p=64926626&postcount=6
---------- Post added at 06:25 PM ---------- Previous post was at 06:23 PM ----------
santoshsadani009 said:
Having the same issue. No S-off and relocked bootloader. Can anyone help please?
Click to expand...
Click to collapse
post the result of fastboot getvar all after removing serialno and imei
so we can know what variant you have and help you achieve what you want

igor.almc said:
I see... So I must unlock the bootloader again, flash and Install twrp 2.8.7.0, restore 4.24.709.3 stock backup, install 4.24.709.3 stock recovery and then relock the bootloader?
Click to expand...
Click to collapse
That is correct. Then OTA update to Marshmallow.
Alternately, with bootloader still relocked, fastboot flash the firmware fw_6.12.709.4 using the file and instructions from here (Same thread as before, but Post #5): https://forum.xda-developers.com/showpost.php?p=60218734&postcount=5.
Then unlock the bootloader, install TWRP 2.8.7 and restore stock backup 6.12.709.4, which will put you right on Marshmallow with no need to OTA.
igor.almc said:
And for unlocking it I have to follow the same way for the first time? HTCdev, etc...?
Click to expand...
Click to collapse
You may be able to fastboot flash the unlock token you used before (but doesn't always work). Otherwise, yes, you can go through the entire HTCDev.com process and get a new token.
---------- Post added at 12:28 PM ---------- Previous post was at 12:27 PM ----------
ahmed.ismael said:
what about flashing the marshmallow RUU.zip ??
it's signed you need a relocked bootloader to flash it on s-on device
here is the RUU
https://www.androidfilehost.com/?fid=24438995911967316
and here is how to flash ( but use the above RUU )
http://forum.xda-developers.com/showpost.php?p=64926626&postcount=6
Click to expand...
Click to collapse
That will also work.

Okay, thank you so much! I'm at work now and don't have my phone with me, so when I arrive home I'll try this way.
Edit:
So I followed your alternate solution and successfully flashed the firmware and now the situation is like this:
(bootloader) version: 0.5
(bootloader) version-bootloader: 3.19.0.0000
(bootloader) version-baseband: 1.25.21331147A1.06G
(bootloader) version-cpld: None
(bootloader) version-microp: None
(bootloader) version-main: 6.12.709.4
(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: 0P6B11000
(bootloader) cidnum: HTC__621
(bootloader) battery-status: good
(bootloader) battery-voltage: 0mV
(bootloader) partition-layout: Generic
(bootloader) security: on
(bootloader) build-mode: SHIP
(bootloader) boot-mode: RUU
(bootloader) commitno-bootloader: 76df2b54
(bootloader) hbootpreupdate: 11
(bootloader) gencheckpt: 0
all: Done!
finished. total time: 0.066s
Now I have to unlock the bootloader and flash twrp 2.8.7 to restore stock backup? That backup is the one in post #3, right?
Thanks a lot again!!!

igor.almc said:
Okay, thank you so much! I'm at work now and don't have my phone with me, so when I arrive home I'll try this way.
Edit:
So I followed your alternate solution and successfully flashed the firmware and now the situation is like this:
(bootloader) version: 0.5
(bootloader) version-bootloader: 3.19.0.0000
(bootloader) version-baseband: 1.25.21331147A1.06G
(bootloader) version-cpld: None
(bootloader) version-microp: None
(bootloader) version-main: 6.12.709.4
(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: 0P6B11000
(bootloader) cidnum: HTC__621
(bootloader) battery-status: good
(bootloader) battery-voltage: 0mV
(bootloader) partition-layout: Generic
(bootloader) security: on
(bootloader) build-mode: SHIP
(bootloader) boot-mode: RUU
(bootloader) commitno-bootloader: 76df2b54
(bootloader) hbootpreupdate: 11
(bootloader) gencheckpt: 0
all: Done!
finished. total time: 0.066s
Now I have to unlock the bootloader and flash twrp 2.8.7 to restore stock backup? That backup is the one in post #3, right?
Thanks a lot again!!!
Click to expand...
Click to collapse
Install the latest RUU as mentioned by @ahmed.ismael above. Everything will be updated in one shot.

igor.almc said:
Now I have to unlock the bootloader and flash twrp 2.8.7 to restore stock backup? That backup is the one in post #3, right?
Click to expand...
Click to collapse
For the alternate method I mentioned, yes that is correct.
igor.almc said:
Thanks a lot again!!!
Click to expand...
Click to collapse
There is a button for that.
Please use the Thanks button for any posts you found helpful.

Thank you folks! You have been amazing! Did everything you said and it's working again!

Help needed HTC M8S (M8QL) O2 UK

Hi!
I have an M8QL O2 UK, stuck in fastboot (the previous owner, i think try to root and failed). It have no recovery (if i try recovery just restart in fastboot again, i try to unlock bootloader using HTCDev but after is restarting it just goes blank and is not unlocking so i cannot flash any type of recovery.
I managed to get this firmware 0PKV[email protected]60201_20.05_018_F_release_477134 _signed_2_4.zip
but unfortunately it give me "device halted due to large image update fail" when i try to installing from microsd and this error when i try with fastboot
D:\m8s original>htc_fastboot flash zip 0PKV[email protected]60201_20.05_018_F_release_477134_signed_2_4
sending 'zip'... (177278 KB) OKAY
sending time = 8.194 secs
writing 'zip'... (bootloader) adopting the signature contained in this image...
(bootloader) signature checking...
(bootloader) rom parsing start ...
(bootloader) rom parsing finish ...
FAILnot allowed
FAILED (remote: not allowed)
Execution time is 21(s)
As i find out from other threads this error occurred because it have an older version of Hboot, so I will need to flash first an "partial zip firmware" to update Hboot, and then the complete firmware. But i cannot find anywhere that partial zip!
Does anybody can help me find that file?
One of this i think:
0PKV[email protected]60201_20.05_018_F_release_477134_partial
0PKV[email protected]60201_20.05_018_F_release_477134_signed_Hboot
My getvar
htc_fastboot getvar all
(bootloader) version: 0.5
(bootloader) version-bootloader: 3.19.0.0000
(bootloader) version-baseband: [email protected]
(bootloader) version-cpld: None
(bootloader) version-microp: None
(bootloader) version-main: 1.21.206.3
(bootloader) version-misc: PVT SHIP S-ON
(bootloader) serialno: xxxxxxx
(bootloader) imei: xxxxxxxx
(bootloader) imei2: Not Support
(bootloader) meid: 00000000000000
(bootloader) product: m8ql_ul
(bootloader) platform: hTCBmsm8939
(bootloader) modelid: 0PKV10000
(bootloader) cidnum: O2___001
(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: 7900fbfd
(bootloader) hbootpreupdate: 11
(bootloader) gencheckpt: 0
(bootloader) mfg-name: 0001
all: Done!
Thank you!

Hi
I am on O2 uk and I flashed this with fastboot but my phone is unlocked.

I will give it a try but i don't think will work because is for M8 not for M8S!
Thank you anyway!

cossty said:
I will give it a try but i don't think will work because is for M8 not for M8S!
Thank you anyway!
Click to expand...
Click to collapse
Have you seen this
https://forum.xda-developers.com/ht...ral/make-custom-recovery-htc-one-m8s-t3114245
https://ruu.lalleman.net/HTC_M8S(QL...08_15.00_016_F_release_434688_combined_signed

Yes I have seen and try all of that but as I said in my post I can't install any recovery, and the firmware of my phone, if you read carefully getvar details, is newer that firmware posted on https://ruu.lalleman.net/ and it cannot be install.
Also I already said that I find the latest firmware 0PKVIMG_M8_QL_UL_M60_SENSE70_MR_O2_UK_2.10.206.1_R [email protected]_20.05_018_F_release_477134 _signed_2_4.zip but because my Hboot it's old it give me the error posted on the initial post!
So please read carefully and understand all the thing written in the initial post first!
Thanks!

How to find right RUU

Hi,
In my M8 (Purchased a used device )there is no option to check software update in the About section. When i googled the issue i found that RUU is the best way to fix this issue. The result after run fastboot getvar all is shown below.
C:\HTC\AruwizardMM>fastboot getvar all
(bootloader) version: 0.5
(bootloader) version-bootloader: 3.19.0.0000
(bootloader) version-baseband: 1.09.20.0119
(bootloader) version-cpld: None
(bootloader) version-microp: None
(bootloader) version-main: 3.30.651.2
(bootloader) version-misc: PVT SHIP S-OFF
(bootloader) serialno: ******
(bootloader) imei: *****
(bootloader) imei2: Not Support
(bootloader) meid: 99000499043853
(bootloader) product: m8_whl
(bootloader) platform: hTCBmsm8974
(bootloader) modelid: 0P6B70000
(bootloader) cidnum: 11111111
(bootloader) battery-status: good
(bootloader) battery-voltage: 0mV
(bootloader) partition-layout: Generic
(bootloader) security: off
(bootloader) build-mode: SHIP
(bootloader) boot-mode: FASTBOOT
(bootloader) commitno-bootloader: 8a0f02ff
(bootloader) hbootpreupdate: 11
(bootloader) gencheckpt: 0
all: Done!
finished. total time: 0.024s
htc_fastboot finished. total time: 1.045s
Please help me with correct RUU. If i flash it the updation error will be fixed. ?

GOPESHGOPI said:
In my M8 (Purchased a used device )there is no option to check software update in the About section. When i googled the issue i found that RUU is the best way to fix this issue.
Click to expand...
Click to collapse
You have the US Sprint version. US versions can't update OTA unless you are actually connected to that US carrier (in your case Sprint).
So therefore, yes RUU is the best way to install an "official" update.
You can find the Sprint RUUs here: https://forum.xda-developers.com/showthread.php?t=2729173
You can update right to the last version (Marshmallow) 6.20.651.3 without flashing any intermediate versions. You will however need to flash the 6.20.651.3 firmware before 6.20.651.3 RUU (requirement peculiar to US Marshmallow RUUs).
Instruction on how to flash 6.20.651.3 firmware are on the same thread as the RUUs.
Keep in mind that flashing RUU will wipe the phone. So backup any data you want to keep to SD or off the phone (cloud, computer) before doing any of the steps.
GOPESHGOPI said:
Please help me with correct RUU. If i flash it the updation error will be fixed. ?
Click to expand...
Click to collapse
It won't "fix" the issue of not getting software updates OTA. It's not so much an "issue" as it is just a fact of the US versions of the M8.
But it also doesn't matter. The RUU I suggested will put you on the last version released by HTC (Marshmallow). There have been no updates since, and there will be no more updates.

Please help - Not able to do hard reset on HTC one M8 and looking the Correct RRU
redpoint73 said:
You have the US Sprint version. US versions can't update OTA unless you are actually connected to that US carrier (in your case Sprint).
So therefore, yes RUU is the best way to install an "official" update.
You can find the Sprint RUUs here: https://forum.xda-developers.com/showthread.php?t=2729173
You can update right to the last version (Marshmallow) 6.20.651.3 without flashing any intermediate versions. You will however need to flash the 6.20.651.3 firmware before 6.20.651.3 RUU (requirement peculiar to US Marshmallow RUUs).
Instruction on how to flash 6.20.651.3 firmware are on the same thread as the RUUs.
Keep in mind that flashing RUU will wipe the phone. So backup any data you want to keep to SD or off the phone (cloud, computer) before doing any of the steps.
It won't "fix" the issue of not getting software updates OTA. It's not so much an "issue" as it is just a fact of the US versions of the M8.
But it also doesn't matter. The RUU I suggested will put you on the last version released by HTC (Marshmallow). There have been no updates since, and there will be no more updates.
Click to expand...
Click to collapse
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
I have a HTC one M8 and it is in vicious Boot loop, sometime it go beyond the lock screen foo few minutes but reboot again. I tried to to hard reset, recovery options etc. but it did not delete any data. All the data stays same though i tired multiple times. I installed the adb utility but it does not work when I select the FASTBOOT USB mode. It only works when phone goes beyond the unlock screen for a few minutes but phone boot loop starts.
FAST boot utility works with FASTBOOT USB mode and list the device when use "fastboot devices" command.
Request you to please help to resolve this issue.
ADB - Details
PS C:\adb\platform-tools> adb devices
List of devices attached
PS C:\adb\platform-tools> fastboot getvar all
(bootloader) version: 0.5
(bootloader) version-bootloader: 3.16.0.0000
(bootloader) version-baseband: 1.16.21331931.LA11G
(bootloader) version-cpld: None
(bootloader) version-microp: None
(bootloader) version-main: 1.58.502.1
(bootloader) version-misc: PVT SHIP S-ON
(bootloader) serialno: ***************
(bootloader) imei: *******************
(bootloader) imei2: Not Support
(bootloader) meid: 00000000000000
(bootloader) product: m8_ul_ca
(bootloader) platform: hTCBmsm8974
(bootloader) modelid: 0P6B12000
(bootloader) cidnum: CWS__001
(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: c3d94491
(bootloader) hbootpreupdate: 11
(bootloader) gencheckpt: 0
all: Done!
Finished. Total time: 0.036s

[email protected] said:
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
I have a HTC one M8 and it is in vicious Boot loop, sometime it go beyond the lock screen foo few minutes but reboot again. I tried to to hard reset, recovery options etc. but it did not delete any data. All the data stays same though i tired multiple times. I installed the adb utility but it does not work when I select the FASTBOOT USB mode. It only works when phone goes beyond the unlock screen for a few minutes but phone boot loop starts.
FAST boot utility works with FASTBOOT USB mode and list the device when use "fastboot devices" command.
Request you to please help to resolve this issue.
ADB - Details
PS C:\adb\platform-tools> adb devices
List of devices attached
PS C:\adb\platform-tools> fastboot getvar all
(bootloader) version: 0.5
(bootloader) version-bootloader: 3.16.0.0000
(bootloader) version-baseband: 1.16.21331931.LA11G
(bootloader) version-cpld: None
(bootloader) version-microp: None
(bootloader) version-main: 1.58.502.1
(bootloader) version-misc: PVT SHIP S-ON
(bootloader) serialno: ***************
(bootloader) imei: *******************
(bootloader) imei2: Not Support
(bootloader) meid: 00000000000000
(bootloader) product: m8_ul_ca
(bootloader) platform: hTCBmsm8974
(bootloader) modelid: 0P6B12000
(bootloader) cidnum: CWS__001
(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: c3d94491
(bootloader) hbootpreupdate: 11
(bootloader) gencheckpt: 0
all: Done!
Finished. Total time: 0.036s
Click to expand...
Click to collapse
I extracted the correct RRU for this phone from this "RUU_M8_UL_M60_SENSE70_ATT_MR_Cingular_US_6.20.502.5_combined.exe" but RRU update is not working and getting below message
PS C:\adb\platform-tools> htc_fastboot flash zip RUU.zip
sending 'zip'... (57338 KB) OKAY
sending time = 2.773 secs
writing 'zip'... (bootloader) adopting the signature contained in this image...
(bootloader) signature checking...
(bootloader) rom parsing start ...
(bootloader) rom parsing finish ...
FAILnot allowed
FAILED (remote: not allowed)
Execution time is 17(s)