Develop Bugs

Soft Bricked the HTC One M8

HTC One M8
Unlocked and S-off
From UK so with international network
Cyanogenmod 11 i think
Clockwork recovery
Soooo i bought the M8 secondhand with Cyanogenmod installed, however, i couldnt do any updates due to error status 7. i tried the normal fix (delete code which checked authorisation of phone) but to no avail. since then the error came back and i managed to get a different error on reboot: "root access possibly lost. fix?". I've cleared cache(s) and done a factory reset. No matter what i pressed it would be in a boot loop. I can still get to bootloader and recovery. then i tried to change the recovery to TWRP however when i try and fastboot, my device is not recognised by my laptop so i cannot add the ADB driver to the device.
sorry for sounding very vague / idiotic, i have no idea what i have done and no idea what i am doing to try and fix it. that means sadly i will need to be spoonfed the fix. if you need any more details or pictures of the problem let me know
thanks in advance

josborn42 said:
i couldnt do any updates due to error status 7. i tried the normal fix (delete code which checked authorisation of phone) but to no avail.
Click to expand...
Click to collapse
Are you trying to update to CM12.1? If so, the error is for a reason, and not to be bypassed in the way you describe.
If you are on an hboot older than 3.19, I don't think it will work with CM12 and 12.1. You'll need to update hboot (and rest of firmware, preferably) to proceed.
Also, CWM may be too old for CM12 as well.
josborn42 said:
then i tried to change the recovery to TWRP however when i try and fastboot, my device is not recognised by my laptop so i cannot add the ADB driver to the device.
Click to expand...
Click to collapse
Not sure what you mean here. Are you trying to install HTC Sync (and corresponding driver) by connecting the phone?
You can just do an XDA search for "simple adb" and you will find a couple really easy adb/fastboot installers.

how do i see what hboot i am on? and how would i update it?
i've installed HTC Sync but it doesn't recognise my phone being connected (so i cant view any files on the phone) and i've installed a simple ADB/fastboot but i can't see the driver option when trying to add it to my phone on Device manager. i have got to the stage whereby i have the ADB/fastboot folder and have the TWRP file in the same folder, just i cant get any further.
where would i begin getting to cyanogenmod 12.1, or would it be easier to revert back to a basic android os?
i know this is probably incredibly frustrating for you as i am a complete novice, but i greatly appreciate your help
i would post pictures to help but i cant as im a new member, i will when i can

josborn42 said:
i've installed HTC Sync but it doesn't recognise my phone being connected (so i cant view any files on the phone)
Click to expand...
Click to collapse
This in itself does not mean the phone is not connecting by fastboot. And fastboot is the important thing here, so we can update TWRP, etc.
Try rebooting into fastboot mode, and try the command and see if your phone's ID is returned: fastboot devices
If you don't get the phone's ID and just "waiting for device" you do indeed have some type of USB connectivity problem.
josborn42 said:
how do i see what hboot i am on? and how would i update it?
Click to expand...
Click to collapse
Boot into bootloader, andyour hboot number is listed near the top of the screen.
Since you are s-off, its fairly easy to update the firmware (and I would suggest to update all the firmware, not just hboot) by flashing the proper firmware.zip. But let's determine whether that is even the problem, before we worry about flashing firmwares.

hboot is: 3.16.0
also my phone is detected by my laptop so all is well there
i have installed a simple 15 second ADB file but am unsure how to proceed from here

josborn42 said:
hboot is: 3.16.0
Click to expand...
Click to collapse
Your firmware is very old, so will need to be updated to run CM12.1. Also, newer versions of TWRP will not run with your old hboot.
Do a fastboot getvar all, and post the output, but delete your IMEI and serial numbers (as these are private info). Need more details on the phone (particularly CID) in order to know how to proceed.

(bootloader) version: 0.5
(bootloader) version-bootloader: 3.16.0.0000
(bootloader) version-baseband: 1.16.2133156.UA15G
(bootloader) version-cpld: None
(bootloader) version-microp: None
(bootloader) version-main:
(bootloader) version-misc: PVT SHIP S-OFF
(bootloader) serialno:
(bootloader) imei:
(bootloader) imei2:
(bootloader) meid: 00000000000000
(bootloader) product: m8_ul
(bootloader) platform: hTCBmsm8974
(bootloader) modelid: 0P6B10000
(bootloader) cidnum: O2___001
(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: ab0efa49
(bootloader) hbootpreupdate: 11
(bootloader) gencheckpt: 0
all: Done!
finished. total time: 0.107s

josborn42 said:
(bootloader) version: 0.5
(bootloader) version-bootloader: 3.16.0.0000
(bootloader) version-baseband: 1.16.2133156.UA15G
(bootloader) version-cpld: None
(bootloader) version-microp: None
(bootloader) version-main:
(bootloader) version-misc: PVT SHIP S-OFF
(bootloader) serialno:
(bootloader) imei:
(bootloader) imei2:
(bootloader) meid: 00000000000000
(bootloader) product: m8_ul
(bootloader) platform: hTCBmsm8974
(bootloader) modelid: 0P6B10000
(bootloader) cidnum: O2___001
(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: ab0efa49
(bootloader) hbootpreupdate: 11
(bootloader) gencheckpt: 0
all: Done!
finished. total time: 0.107s
Click to expand...
Click to collapse
I'm going to suggest WWE/International firmware. The updates are available way before O2 updates.
Download this firmware (it also includes TWRP2.8.4.0). Rename it to firmware.zip and place it into your fastboot folder.
Next, boot into fastboot and change your CID to superCID (it won't flash with the O2 CID)
fastboot devices to make sure you are connected (a bunch of letters and numbers/your serial# means you are)
fastboot oem rebootRUU (a black screen with the HTC logo means you are in RUU mode)
fastboot oem writecid 11111111 (eight ones) You are now superCID!
Now flash the firmware
fastboot flash zip firmware.zip
If you get "error 90 hboot pre-update" (and you probably will with how old your current firmware is) run the same command again and the firmware will flash properly. The first run only updated your hboot.
The process will stop at 75% to 90%. That's normal and gives you a chance to check your console output. The last few percentage is the reboot.
The bar will fill to 100% after you enter fastboot reboot-bootloader
That's it. Good luck!

thank you both so much! so now do i just download the appropriate cyanogenmod version and flash it over?

josborn42 said:
thank you both so much! so now do i just download the appropriate cyanogenmod version and flash it over?
Click to expand...
Click to collapse
Yes. But there are more ROMs out there as well. Try them out and find the one that suits your needs best.

hi there i have htc one m8 rooted s-on & software status is modified
i got a new update so i flashed the stock recovery then downloaded the update and pressed install
it was loading the update and suddenly the screen frozen on the htc ONE screen without responding
i tried the volume down + power button nothing happened then i tried volume up + power button
it reboots and freezes on the same screen - tried to remove the sim & sd card but nothing happened
what should i do plz ???
cid : htc_j15
build number : 4.16.401.10

HTC One M8. Noob needs help fixing phone.

Hello, so quite sometime ago I rooted my phone, or unrooted it. I am not sure what the term is, I dont even remember why I done this in the first place. Anyways today I wanted to just put my phone back to like it was when I got it, and in doing so I have actually broke my phone I can't get my phone to boot up anymore, I always get a message saying I have no OS installed. I am really useless with all of this so I would appreciate it if there is a patient person out there who can help me get my phone back on and back to how it was when I recieved it. I am sure I need to add more information but I dont know what so please tell me what you guys need to know and I will try and provide the answers.

This should be the first rule when asking for help.
Post fastboot getvar all result (delete serial & imei no.)
Without this info, no one will be able to offer any help

ckpv5 said:
This should be the first rule when asking for help.
Post fastboot getvar all result (delete serial & imei no.)
Without this info, no one will be able to offer any help
Click to expand...
Click to collapse
Where do I find this?

Do you have fastboot & adb on your PC ? You should have one, if not how can you install a custom recovery and root your device before ?
If you're not sure .. install this : http://forum.xda-developers.com/showthread.php?t=2317790
Put your device in bootloader mode and connect to PC
Open a command prompt and type fasboot getvar all then "enter"
Copy the outcome and paste here

ckpv5 said:
Do you have fastboot & adb on your PC ? You should have one, if not how can you install a custom recovery and root your device before ?
If you're not sure .. install this : http://forum.xda-developers.com/showthread.php?t=2317790
Put your device in bootloader mode and connect to PC
Open a command prompt and type fasboot getvar all then "enter"
Copy the outcome and paste here
Click to expand...
Click to collapse
(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: 0P6B10000
(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: dcdaa6e0
(bootloader) hbootpreupdate: 11
(bootloader) gencheckpt: 0
all: Done!
I think thats what you want right?.

Yes .. that's the one.
You have two options :
Option 1:
Install new stock ROM with a RUU - Download : https://www.androidfilehost.com/?fid=95916177934555499
you need to relock bootloader - run command fastboot oem lock
run RUU (right click the RUU and select run as administrator)
you need to use USB2.0 on your PC
RUU will wipe everything on your device including your files on internal storage
Option 2:
Restore a non-rooted TWRP backup 4.20.206.1
No need to relock bootloader
No internal storage wipes
Read how-to and all the needed files are here : http://forum.xda-developers.com/htc-one-m8/help/tutorial-how-to-stock-stock-twrp-t3086860
Good luck .. I have to sleep now, good night

ckpv5 said:
Yes .. that's the one.
You have two options :
Option 1:
Install new stock ROM with a RUU - Download : https://www.androidfilehost.com/?fid=95916177934555499
you need to relock bootloader - run command fastboot oem lock
run RUU (right click the RUU and select run as administrator)
you need to use USB2.0 on your PC
RUU will wipe everything on your device including your files on internal storage
Option 2:
Restore a non-rooted TWRP backup 4.20.206.1
No need to relock bootloader
No internal storage wipes
Read how-to and all the needed files are here : http://forum.xda-developers.com/htc-one-m8/help/tutorial-how-to-stock-stock-twrp-t3086860
Good luck .. I have to sleep now, good night
Click to expand...
Click to collapse
Option one just stays on updating 0/6 sending and nothing happens. Option 2 doesnt make sense to me, I really have no idea what most of it means.

Ok so this morning I tried option one again. It went through the first 6 stages fine, then it got stuck on the next set of stages at 1/7. When I restart my phone into the recovery screen type thing I have in red letters OS - (4.20.206.1) but I am still unable to start my phone up. I have disabled firewalls and also using USB2.0 when trying to do this process. Maybe this one that has been linked is not the right one for me? Or maybe I am doing something wrong?. I would really love to get my phone back working so all help is really appreciated.
(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: 0P6B10000
(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: dcdaa6e0
(bootloader) hbootpreupdate: 11
(bootloader) gencheckpt: 0
all: Done!

You have USB/Device connection problem. First it was 0/6 and now 1/7 ...
Which windows version that you use ? try with a Win7 PC .. I don't know many people cannot run RUU on windows higher version that Win7. I don't have problem on any windows version including my current Win 10.
What do you don't understand about option 2 ? It's very straight forward.
Install latest TWRP 2.8.6.0 or TWRP 2.8.7.0 (you need to reunlock bootloader because you relocked it for option 1)
Extract and copy the backup folder to TWRP backup on your device
Restore backup .. done
Or
Just install any of Sense based ROM that available in Development thread to get your device up & running ... then you can start that option 1 & 2 again
But seeing you mentioned OS - 4.20.206.1 in red, you need to get option 1 done because the firmware installation was incomplete

ckpv5 said:
You have USB/Device connection problem. First it was 0/6 and now 1/7 ...
Which windows version that you use ? try with a Win7 PC .. I don't know many people cannot run RUU on windows higher version that Win7. I don't have problem on any windows version including my current Win 10.
What do you don't understand about option 2 ? It's very straight forward.
Install latest TWRP 2.8.6.0 or TWRP 2.8.7.0 (you need to reunlock bootloader because you relocked it for option 1)
Extract and copy the backup folder to TWRP backup on your device
Restore backup .. done
Or
Just install any of Sense based ROM that available in Development thread to get your device up & running ... then you can start that option 1 & 2 again
But seeing you mentioned OS - 4.20.206.1 in red, you need to get option 1 done because the firmware installation was incomplete
Click to expand...
Click to collapse
Yes maybe I do but I am not sure why, maybe I need to look into seeing if my motherboard needs an update or if any windows updates are needed. I am on Windows 7 but like I said, it goes through the first 6 steps then as it boots the bootloader up again I hear the sound that my computer makes when plugging in a USB cable. However even if I leave it, it will not go past 1/7. But if I take the cable out it reconises I have done that so that makes me wonder if it is a USB problem?.
I dont understand option 2 because I dont know anything about all of this, I shouldnt have done it in the first place and I dont even remember why I did. I also must have deleted my backups as I cant find them. The part I was confused at, was which TWRP to get, then how to get it on my phone as my computer does not reconise my phone in the state it is in so I cant just go into the phone and place it. I also dont have an SD card with my phone either.
I will try updating my PC and try and get option 1 working and report back. Thank you for helping by the way, I really appreciate your patience with me.

Try also to install latest HTC USB driver.
Download HTC Sync Manager and install. Then uninstall the HTC Sync Manager but leave the HTC Driver installed.
http://www.htc.com/us/support/software/htc-sync-manager.aspx

Is there a way to wipe this OS version and try this whole thing again? I have found my 2.0 USB ports, I have tried a different cable and it still gets hung up. Only now it doesnt move past the 0/6 whereas it used to go through all of them then into the 1/7 and get stuck on this part. I also can try a different PC if need be.

KDK11 said:
I also can try a different PC if need be.
Click to expand...
Click to collapse
That is what I would suggest.
Also, does your PC have USB 3.0 on the ports? This has been known to cause problems with the RUU.

Ok so I have done the steps suggested now, when I uninstalled the HTC Sync Manager it let the process complete. It is now on a screen which says Android is upgrading, optimizing app 17-261. Is that my phone fixed? Or is there more I need to do now that it actually has turned on?.

KDK11 said:
It is now on a screen which says Android is upgrading, optimizing app 17-261. Is that my phone fixed?
Click to expand...
Click to collapse
Looks that way. It should boot into OS after its done optimizing all the apps, which is normally pretty slow (with that many, it will take 10 or more) since Android moved from Dalvik to ART.

Well I would like to say a massive thank you for the help I really appreciate the patience and help. So thank you again. I would have been lost without you's.

KDK11 said:
Ok so I have done the steps suggested now, when I uninstalled the HTC Sync Manager it let the process complete. It is now on a screen which says Android is upgrading, optimizing app 17-261. Is that my phone fixed? Or is there more I need to do now that it actually has turned on?.
Click to expand...
Click to collapse
That's it ... nothing else to do .. run the setup wizard and enjoy your device
KDK11 said:
Well I would like to say a massive thank you for the help I really appreciate the patience and help. So thank you again. I would have been lost without you's.
Click to expand...
Click to collapse
No problem .. glad that we could help

O2 RUU Marshmallow CID O2_001 pleaseee
Hi!
I have an HTC One M8 from O2 UK, that i give me a lot of problem after updating to Marshmallow.
After successfully complete the update i have done a factory reset which i guess it soft brick my phone.
It will show optimizing apps, after that starting apps and is stuck there until battery dies. I try many methods, formatting cache partition from recovery menu, made another factory restore from fastboot, I even left it plugged one night and nothing.
The only hope is if i find a RUU for CID O2_001
The phone is S-ON non rooted, i unlock then re lock boot loader thanks to htcdev website.
adb fastboot getvar command show this.
< waiting for device >
(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: 6.13.206.5
(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: 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: 76df2b54
(bootloader) hbootpreupdate: 11
(bootloader) gencheckpt: 0
all: Done!
finished. total time: 0.126s
Please help me made the phone working again!
Thank you!

cossty said:
Hi!
I have an HTC One M8 from O2 UK, that i give me a lot of problem after updating to Marshmallow.
After successfully complete the update i have done a factory reset which i guess it soft brick my phone.
It will show optimizing apps, after that starting apps and is stuck there until battery dies. I try many methods, formatting cache partition from recovery menu, made another factory restore from fastboot, I even left it plugged one night and nothing.
The only hope is if i find a RUU for CID O2_001
The phone is S-ON non rooted, i unlock then re lock boot loader thanks to htcdev website.
adb fastboot getvar command show this.
< waiting for device >
(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: 6.13.206.5
(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: 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: 76df2b54
(bootloader) hbootpreupdate: 11
(bootloader) gencheckpt: 0
all: Done!
finished. total time: 0.126s
Please help me made the phone working again!
Thank you!
Click to expand...
Click to collapse
Hello,
In this thread you will find the firmware for your phone. It looks like you know the process of installing your firmware, so if I were you I'd down load the proper firmware and try the whole process all over again.

Jerrel7 said:
Hello,
In this thread you will find the firmware for your phone. It looks like you know the process of installing your firmware, so if I were you I'd down load the proper firmware and try the whole process all over again.
Click to expand...
Click to collapse
Hi!
I didn't find because it is to new. It's an O2 UK, android 6 version, cid O2_001.
I did something else, i flashed TWRP recovery and then i flash latest InsertCoin rom, and now the phone it is working again.
Thank you!

HTC One M8 stuck on black screen after rebooting

Hello,
In the past I had rooted my Rogers HTC One M8, but have since unrooted it and relocked the bootloader. I had accidentally installed the wrong version for something when bringing it back to stock, which caused no issues until I tried to install the OTA for Marshmallow (had "htc/rogers_wwe/htc_m8:5.0.1/LRX22C/463267.2:user/release-keys", but found out I needed "htc/rogers_wwe/htc_m8:5.0.1/LRX22c/463267.3:user/release-keys" or "htc/rogers_wwe/htc_m8:6.0/MRA58K/667457.7:user/release-keys"). I kept the notification up for a while, then decided to try to upgrade to the newer android version. I rooted my phone again to grab the OTA file from my device, then flashed the recovery and boot image files from this OTA file, then did "fastboot oem lock" to re-lock the device, up until which everything worked fine. After the device re-locked, whenever I turned it on, it would go to the white HTC screen like normal, then go to a black screen (but the backlight would be on, so it was obviously not off). I can press power + vol-up to get the phone to briefly turn the backlight off before repeating this process of white HTC screen and black screen with backlight on. Sometimes, it will turn off, if the timing is right, instead of repeating this process. When turned off, if I plug it in , the charging battery animation shows up like normal and the phone charges normally. I can also get to the bootloader by pressing vol-down right after the backlight turns off but before the white HTC screen shows up. I can get to the recovery from the bootloader, and do everything else you would normally be able to do from the bootloader. I just can't get the phone to fully boot up. I've wiped the cache and dalvik cache, and wiped my phone.
Fastboot commands work fine, but adb commands don't. Here is the result of "fasboot getvar all" if that would help diagnose my issue:
(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: Nonez
(bootloader) version-main: 4.20.631.3
(bootloader) version-misc: PVT SHIP S-ON
(bootloader) imei2: Not Support
(bootloader) meid: 00000000000000
(bootloader) product: m8_ul
(bootloader) platform: hTCBmsm8974
(bootloader) modelid: 0P6B16000
(bootloader) cidnum: ROGER001
(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: 4a2bcc8a
(bootloader) hbootpreupdate: 11
(bootloader) gencheckpt: 0
all: Done!
finished. total time: 0.032s
Thank you for any help! If you need any more information, just ask!

Have you tried using an RUU?
I think that you should try to use an RUU to fix your phone. When my M8 acted up, I downloaded the RUU from HTC's website for my model, ran it, and had it do it's thing. It will nuke everything on your phone, but it is a good option if it will work.

yumi1996 said:
I think that you should try to use an RUU to fix your phone. When my M8 acted up, I downloaded the RUU from HTC's website for my model, ran it, and had it do it's thing. It will nuke everything on your phone, but it is a good option if it will work.
Click to expand...
Click to collapse
There is no Rogers RUU available.

HTC ONE M8 takes hours to start up

Hi folks, i've got a completely messed up Htc One over here. I dont know what else to do - I tried everything that came to my mind. Nothing helped.
The story so far:
A friend of mine got an already softbricked HTC One M8 from his son. He gave it to me and I managed to fix it by flashing the following RUU (bootloader open, S-On):
0P6BIMG_M8_UL_M60_SENSE70_MR_HTC_Europe_6.12.401.4_Radio_1.29.214500021.12G_20.72.4196t.01_release_464360_signed
Afterwards the phone ran flawlessly. Two weeks ago, my friend received a message, which was displayed on the lockscreen. My friend unlocked the screen and accidently tapped the message notification. Instantly an unknown installation process of some kind started. He paniked because he couldn't stop the process and powered down the device by holding down the power button. After that the phone didn't show any response to the power button. We thought it was completely broken now. After three hours, the phone suddenly started up. The os was working fine despite the fact he couldn't establish internet connection. He then made a factory reset. Nothing changed. Even if you plug in charging cable, it won't charge. Again I'm in charge now to fix it up.
What I did until now:
I managed to boot the device into bootloader mode via adb reboot bootloader. After 3 hours the bootloader mode was ready to go. First I changed to fastboot mode and flashed TRWP (openrecovery-twrp-2.7.1.0-m8). It worked. After that I flashed Android_Revolution_HD-One_M8_53.1_c8bf38 via recovery. No errors occured but the phone still takes hours to restart.
Can anyone help?
I'm from germany so please forgive me if I've made some mistakes.
Update:
Three hours after flashing the Android Revolution rom, the phone started up and finished the rest of the installation process without problems. The rom itself runs excellent. But after restarting the phone the problem remains - I guess I have to wait again 3 hours to proceed. Really annoying.

It sounds like your friend interrupted an OTA update, which is a very bad idea. Interrupting the process (by powering down) while a critical partition is being rewritten can lead to issues, even a brick!
Factory reset (if that is what you mean by "He then set it back to factory settings") won't do much in this case, all that does is wipe user data (doesn't actually restore OS or any other partitions).
Custom ROM is not a bad idea, but that is only 2 partitions (system and boot.img) while an RUU will restore all partitions (around 40) to proper factory software and firmware.
I would suggest running the same RUU again. Although the RUU that you mentioned may not run, depending on what the OTA did. Please do fastboot getvar all, and post the results (delete IMEI and serial number before posting).

I will do as you said... as soon as the phone wakes up. Thanks.
Allright, here we go:
(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: HT-
(bootloader) imei: 357-
(bootloader) imei2: Not Support
(bootloader) meid: 00000000000000
(bootloader) product: m8_ul
(bootloader) platform: hTCBmsm8974
(bootloader) modelid: 0P6B10000
(bootloader) cidnum: HTC__102
(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: -0.000s
Update: Just tried this:
I renamed 0P6BIMG_M8_UL_M60_SENSE70_MR_HTC_Europe_6.12.401.4 _Radio_1.29.214500021.12G_20.72.4196t.01_release_4 64360_signed to 0P6BIMG.ZIP and saved the file on the sdcard. The Bootloader now says: "Device halted due to Large Image update fail! Press Power to reboot."
Renamed the file again and then tried via TRWP. Failed as well. Error in zipfile.

HTC One M8 stuck on bootloader

hi, thanks for letting me join. if this is posted in the wrong place im very sorry. My HTC One M8 is secondhand and Ive had it for about 1.5 years now. the other day it crashed and ended up in a boot loop. i have tried lots of stuff but to no help. is there a way i can load stuff on to the sd card to fix it. on two occations it has got to the setup screen but errors would not let me type wifi password so had to hard reset.
ive tried hard reset
ive tried recovery
ive tried wipecache/factory reset
ive tried factory reset......seemed to work on two occations but on setup came back with sense input error and google error.
the phone had all the newest updates and was unlocked to any network.
on bootlader its says....SOFTWARE STATUS MODIFIED
LOCKED
SECURITY WARNING
THEN LOTS OF GREEN WRITING.
any help would be great. thanks

Post the result of fastboot getvar all ( after removing serialno and imei )
Sent from my HTC M8 using XDA Labs

ahmed.ismael said:
Post the result of fastboot getvar all ( after removing serialno and imei )
Sent from my HTC M8 using XDA Labs
Click to expand...
Click to collapse
hi, im not sure if usb debug is on. will i still be able to get this info?

VMKDF said:
hi, im not sure if usb debug is on. will i still be able to get this info?
Click to expand...
Click to collapse
Yes
From fastboot mode ( no need for usb debugging )
Sent from my HTC M8 using XDA Labs

ahmed.ismael said:
Yes
From fastboot mode ( no need for usb debugging )
Sent from my HTC M8 using XDA Labs
Click to expand...
Click to collapse
hi, im sorry but new to all this bootloader stuff. here is what i see on phone. ill google how to get other info when i get home. cheers

VMKDF said:
hi, im sorry but new to all this bootloader stuff. here is what i see on phone. ill google how to get other info when i get home. cheers
Click to expand...
Click to collapse
cant upload photo. ill try when i get home. cheers

VMKDF said:
cant upload photo. ill try when i get home. cheers
Click to expand...
Click to collapse
you can just copy and paste the result here

ahmed.ismael said:
you can just copy and paste the result here
Click to expand...
Click to collapse
C:\Users\User>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: HTC__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: 76df2b54
(bootloader) hbootpreupdate: 11
(bootloader) gencheckpt: 0
all: Done!
finished. total time: 0.203s
C:\Users\User>

VMKDF said:
C:\Users\User>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: HTC__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: 76df2b54
(bootloader) hbootpreupdate: 11
(bootloader) gencheckpt: 0
all: Done!
finished. total time: 0.203s
C:\Users\User>
Click to expand...
Click to collapse
You can follow this post instruction ( skip the part of relocking bootloader )
https://forum.xda-developers.com/showpost.php?p=64926626&postcount=6
easy way :
Download the RUU.zip from the linked post and rename it to 0P6BIMG.zip then put it in your external sd card root and reboot to bootloader ( hboot )
It will ask you to update confirm it and wait for a few minutes till it finish and ask you to reboot,that's it
Sent from my HTC M8 using XDA Labs

downloading it now..... will let you know. thanks very much for your time

VMKDF said:
downloading it now..... will let you know. thanks very much for your time
Click to expand...
Click to collapse
get this error
device halted due to large image update fail!
press <power> to reboot
then !!image update FAIL!! after the reboot
tried this too
i select recovery, then press power and vol up once to get to the menu with ....apply update from sdcard
install/sdcard/0P6BIMG.zip
finding update package
opening update package
verifying update package
E:footer is wrong
E:signature verification failed
installation aborted

VMKDF said:
get this error
device halted due to large image update fail!
press <power> to reboot
then !!image update FAIL!! after the reboot
tried this too
i select recovery, then press power and vol up once to get to the menu with ....apply update from sdcard
install/sdcard/0P6BIMG.zip
finding update package
opening update package
verifying update package
E:footer is wrong
E:signature verification failed
installation aborted
Click to expand...
Click to collapse
you can't flash RUU in recovery mode !!!!!!!!!!!
you tried to flash using sd card ( formatted as fat32 ) or the fastboot method ????
you said earlier your bootloader is locked
if it's unlocked relock it

Sir you are a GOD!!!!!!!! Phone is back to normal.
I followed your instructions and my M8 is now back to normal.
Thank you so much for your help and time. You saved my phone.
Thanks again

htc bootloader info
(bootloader) version: 0.5
(bootloader) version-bootloader: 3.19.0.0000
(bootloader) version-baseband: 1.29.213311711.15G
(bootloader) version-cpld: None
(bootloader) version-microp: None
(bootloader) version-main: 4.31.425.2
(bootloader) version-misc: PVT SHIP S-OFF
(bootloader) serialno:
(bootloader) imei:
(bootloader) imei2: Not Support
(bootloader) meid: 00000000000000
(bootloader) product: mels_tuhl
(bootloader) platform: hTCBmsm8974
(bootloader) modelid: 0P6B6****
(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: 438ab579
(bootloader) hbootpreupdate: 11
(bootloader) gencheckpt: 0
all: Done!
finished. total time: 0.047s

bsikazinga said:
htc bootloader info
Click to expand...
Click to collapse
Bootloader info is great. But if you are asking for help, you really need to tell us more about what is going on with the phone. I gather from the subject of the thread, that your device is stuck in bootloader. But how did it get to that state? Did it just happen spontaneously (while using the phone, or when you tried to turn the screen on after idle for a while, etc.?). Or were you trying to do something, like unlock bootloader, install custom recovery TWRP, root, flash custom ROM, etc. Or some other function, like install an OTA update? If trying to flash something, provide exact details like version numbers, file names; as well as exactly what happened when you tried to install (changes to status of phone, error messages, etc.).
Have you tried anything so far to resolve the problem? If so, describe exactly what you tried, again with any applicable file names, version numbers, and outcomes (error messages, etc.).
The more specific details you provide, the better we can help you.

Stuck can't get phone to connect to PC
Hi, I have an HTC One M8 which I just got secondhand, it's stuck on bootloader screen, usual messages ('modified' 'locked' etc)... I followed the instructions for RUU flash on other posts and am all set to go, but annoyingly my phone will not connect to any PC I use....I have installed the drivers etc...I am well used to using ADB, just can't get the phone to be recognised.
I also can't boot into recovery, just ends up back in the bootloader screen again. If it does try and boot it hangs at the logo screen....
Would welcome some ideas on where to go next....

GitManMatt said:
Hi, I have an HTC One M8 which I just got secondhand, it's stuck on bootloader screen, usual messages ('modified' 'locked' etc)... I followed the instructions for RUU flash on other posts and am all set to go, but annoyingly my phone will not connect to any PC I use....I have installed the drivers etc...I am well used to using ADB, just can't get the phone to be recognised.
Click to expand...
Click to collapse
adb won't work in bootloader mode, by definition. You want fastboot for running RUU, which is related to adb, but with important differences.
As long as you are in bootloader-fastboot mode (fastboot is highlighted near the top of the bootloader screen) which is often default if phone is connected by USB, you should be able to use fastboot. Try the command:
fastboot devices
And as long as the phone's ID is returned, you should be good to go.
If the command just results in "waiting for response" or an error, try a different USB cable, or a different USB port on your PC.

Still no go... Tried connecting on different ports and with different cables but just doesn't seem to work. Best I've managed is with the Aruuwizard tool which seemed to connect but I couldn't get much further. If I run fast boot devices it returns no device... Just a blank line....

Hello. I have a similar problem with my HTC One Mini. It's stuck in fastboot mode and trying to reboot/boot into recovery or factory reset does nothing...goes black for a sec and then back to fastboot mode. Bootloader is unlocked and it's S-ON. Any help much appreciated! Cheers!