Phone stuck in reboot loop - One (M8) Q&A, Help & Troubleshooting

Hello,
I installed a custom ROM (ViperOneM8+4.6.1) on my M8, which is the international edition M8QL_UL.
I now suspect this ROM is not compatible, as the phone is stuck in a reboot loop - the white screen with the red text at the bottom appears, and then about 35 seconds later the screen goes blank and it restarts.
I've tried holding the power button down to try and turn it off, but it won't stop restarting.
I've tried holding the volume down + power buttons to enter recovery and it doesn't work.
Adb and fastboot don't work either - the phone isn't on long enough to appear on my PC.
Please let me know if there's anything I can do at this point?
Cheers.

jmh55 said:
Hello,
I installed a custom ROM (ViperOneM8+4.6.1) on my M8,
Click to expand...
Click to collapse
Your device is not a M8 but a different device called M8s ....
Read this thread and get help there if you need to.
http://forum.xda-developers.com/htc-one-m8/help/make-custom-recovery-htc-one-m8s-t3114245

ckpv5 said:
Your device is not a M8 but a different device called M8s ....
Read this thread and get help there if you need to.
http://forum.xda-developers.com/htc-one-m8/help/make-custom-recovery-htc-one-m8s-t3114245
Click to expand...
Click to collapse
Oh dear, I think this is the issue. The ROM I used was for the M8, not the M8s.
Thanks, I'll try posting in that thread.

jmh55 said:
I've tried holding the volume down + power buttons to enter recovery and it doesn't work.
Click to expand...
Click to collapse
There is no button combo that boots into recovery for this device. I believe you mean the button combo to enter bootloader. Folks will often call this recovery, but bootloader and recovery are 2 completely different things (and this is an important distinction), and folks need to stop thinking they are the same.
Since the phone is bootlooping, just hold the vol down button during the next "loop" and you will enter bootloader.
Once in bootloader, then you can select to boot into custom recovery. Then restore your stock nandroid, if you made one before flashing the custom ROM (and you should always make a nandroid of the stock ROM before flashing a custom ROM).
If you didn't make a stock nandroid, you'll need to use RUU or find a stock nandroid that matches your firmware number.
jmh55 said:
Adb and fastboot don't work either - the phone isn't on long enough to appear on my PC.
Click to expand...
Click to collapse
Fastboot only works in bootloader-fastboot mode; adb only works in OS or recovery. So neither is ever going to work while in a bootloop. Get into bootloader as I've described above (and select fastboot); and you should at least be able to use fastboot.

redpoint73 said:
There is no button combo that boots into recovery for this device. I believe you mean the button combo to enter bootloader. Folks will often call this recovery, but bootloader and recovery are 2 completely different things (and this is an important distinction), and folks need to stop thinking they are the same.
Since the phone is bootlooping, just hold the vol down button during the next "loop" and you will enter bootloader.
Once in bootloader, then you can select to boot into custom recovery. Then restore your stock nandroid, if you made one before flashing the custom ROM (and you should always make a nandroid of the stock ROM before flashing a custom ROM).
If you didn't make a stock nandroid, you'll need to use RUU or find a stock nandroid that matches your firmware number.
Fastboot only works in bootloader-fastboot mode; adb only works in OS or recovery. So neither is ever going to work while in a bootloop. Get into bootloader as I've described above (and select fastboot); and you should at least be able to use fastboot.
Click to expand...
Click to collapse
Thanks for the suggestions and advice - I've got the Pandora Rom back on it now and won't be fiddling anymore I think.
I actually managed to get it sorted by holding vol-up and power for a good 15 seconds based on advice from the M8s thread, just in case any one has the same problem and vol-down doesn't solve it: http://forum.xda-developers.com/showpost.php?p=63177320&postcount=658
Thanks again everyone, I'm been amazed by how helpful people on this forum are.

jmh55 said:
I actually managed to get it sorted by holding vol-up and power for a good 15 seconds based on advice from the M8s thread, just in case any one has the same problem and vol-down doesn't solve it: http://forum.xda-developers.com/showpost.php?p=63177320&postcount=658
Click to expand...
Click to collapse
Power+vol up reboots the phone. You stated the phone was already in a bootloop, which means it was already rebooting over and over.
Vol down (just vol down, no need to hold power button) during any reboot will put you into bootloader. If it doesn't, its because you didn't hold vol down long enough.

Related

i just bricked my M8 (stock 4.4.2 just rooted)

i just bricked my M8 (stock 4.4.2 just rooted)
i rooted my phone so i couldn't get OTA updated to i tried to use "[GUIDE] How to add root access & and keep official OTA updates | 3.28.401.9"
but after i flashed boot.img using fastboot flash boot boot.img command in the fastboot mode the phone stuck on boot screen (HTC logo boot up screen) even after i heard the rom sound load up
now i can't even restart my phone to be able to access the boot menu
i tried to use Android Revolution HD rom to i use their "Flash_recovery_3.28.401.7" now i can't even log into recovery "i wait to the battery is empty to be able to access boot menu :crying
any help plzzzzz :crying:
thx in advance
sahmeds said:
i just bricked my M8 (stock 4.4.2 just rooted)
i rooted my phone so i couldn't get OTA updated to i tried to use "[GUIDE] How to add root access & and keep official OTA updates | 3.28.401.9"
but after i flashed boot.img using fastboot flash boot boot.img command in the fastboot mode the phone stuck on boot screen (HTC logo boot up screen) even after i heard the rom sound load up
now i can't even restart my phone to be able to access the boot menu
i tried to use Android Revolution HD rom to i use their "Flash_recovery_3.28.401.7" now i can't even log into recovery "i wait to the battery is empty to be able to access boot menu :crying
any help plzzzzz :crying:
thx in advance
Click to expand...
Click to collapse
Well that's one of the perks of flashing a 3.xx.xxx.x ROM on 1.xx.xxx.x(4.4.2) firmware. You get to have extremely long boot up times and you won't have a proper working radio which leaves you with no wifi, data, gps, bluetooth...
Your OTA probably didn't work because of a custom recovery, not because it was rooted. Root does NOT prevent OTA updates from installing, though you might lose root access after the OTA.
If you're stuck at Boot screen hold Volume UP + Power button for 10seconds, as soon as the screen goes black press volume Down + Power button to enter into Bootloader.
Flash a custom recovery like TWRP. Go into recovery and restore a nandroid backup for your device.
first thx alot for replaying
i already got TWRP installed but the screen is stock on boot screen but still manage on the back ground to load my current rom as i'm hearing the log in sound of the rom :S
so i tried to power it off without seeing by holding the power key the power option pop up and touching random parts of the screen but i failed
i even waited for the battery to empty and factory reset the phone with no use
is these is any way even by adb to power off my phone
plzzz help
thx again for replaying
sahmeds said:
first thx alot for replaying
i already got TWRP installed but the screen is stock on boot screen but still manage on the back ground to load my current rom as i'm hearing the log in sound of the rom :S
so i tried to power it off without seeing by holding the power key the power option pop up and touching random parts of the screen but i failed
i even waited for the battery to empty and factory reset the phone with no use
is these is any way even by adb to power off my phone
plzzz help
thx again for replaying
Click to expand...
Click to collapse
By the look of things you are booted in OS but have no screen, hence why try and hold power button in and randomly tap to shut off?
I told you already to Hold Volume UP + Power button for about 10seconds and then hold volume down + power to enter bootloader.
You can of course also just plug it in and try to reboot to bootloader using adb, if you have USB debugging enabled. adb reboot bootloader
As already said just hold power and volume up for around 12 seconds then immediately press and hold power and volume down. This will always get you into the boot loader.
However if adb is working just use the command above. Reflash the original boot.img and you should be good.
ashyx said:
As already said just hold power and volume up for around 12 seconds then immediately press and hold power and volume down. This will always get you into the boot loader.
However if adb is working just use the command above. Reflash the original boot.img and you should be good.
Click to expand...
Click to collapse
ya power and volume up worked for me thx
i flashed the boot.img using adb and stock recovery that make it don't even continue to the rom but hang up
so i installed twrp-2.8.0.1 so now i got recovery working but i still can't get in the rom as it's still no screen
must it install a new rom or can you give me a stock boot.img (may be mine have an issue)
and if i need to install a new rom can u recommend one for me (just direct me to the link)
thx again now i got a new hope
http://forum.xda-developers.com/showthread.php?t=2701376
Use that to get back to the stock rom for your phone. Then after installing the right one, get the OTA
sahmeds said:
ya power and volume up worked for me thx
i flashed the boot.img using adb and stock recovery that make it don't even continue to the rom but hang up
so i installed twrp-2.8.0.1 so now i got recovery working but i still can't get in the rom as it's still no screen
must it install a new rom or can you give me a stock boot.img (may be mine have an issue)
and if i need to install a new rom can u recommend one for me (just direct me to the link)
thx again now i got a new hope
Click to expand...
Click to collapse
Never leave your device with an empty battery. In any circumstances.
Because you might not be able to charge it. Recover the device while you have some power on your battery.
Remember, this is a unibody device. It's not so easy to pull out the battery.

Can't Access Recovery After Android 5.0.1

Anyone had any issues accessing their recovery since installing Lollipop.
The sequence changes to get into it is all.
From powered off hold power and volume down.
Select RECOVERY and the phone boots into recovery and shows the "dead" Android.
Press power and then volume up. (Its reversed from previously pressing volume up then power)
A rom has nothing to do with the recovery. If you flashed a ruu that includes the stock HTC recovery you may want to flash back the custom one. This is a guess because your info is kinda thin to work with.
Mr Hofs said:
A rom has nothing to do with the recovery. If you flashed a ruu that includes the stock HTC recovery you may want to flash back the custom one. This is a guess because your info is kinda thin to work with.
Click to expand...
Click to collapse
I think the OP just means the stock one. I couldn't access it when powered down and USB connected, I had to remove USB, and then power, vol down.
Thanks sorted. Didn't realise it was reversed.

HTC One M8 (Bricked?) PLEASE HELP!

Hi there,
So recently I just tried rooting my HTC One M8, with the All-In-One tool kit. It was successful, I was messing around with it for a while, removing bloat wear, ect. Then I figured out about custom roms, and heard about CyanMod11. It turns out that it couldn't read my sim card for whatever reason, but it still worked and loaded up. Then, I tried Android Revolution. THAT one worked flawlessly, besides the fact that I couldn't take screen shots for whatever reason. I should of just left it there. Here's where things go wrong. Then, I tried ViperOneM8. After that, it failed to load up and is now in a endless boot loop. I can't get into fast boot either. However, one time I somehow did manage to get into fast boot, but I didn't see the "recovery" option anymore. So... I'm out of ideas here. I'm really worried I bricked my device for good. My device powers on and everything, it just won't load up any OS, and I can't get into fastboot/recovery. Why I'm mainly worried is I failed to create a back up also. I'm running out of ideas here, and if ANYONE could help me that would be great.
RadicalMushroom said:
Hi there,
So recently I just tried rooting my HTC One M8, with the All-In-One tool kit. It was successful, I was messing around with it for a while, removing bloat wear, ect. Then I figured out about custom roms, and heard about CyanMod11. It turns out that it couldn't read my sim card for whatever reason, but it still worked and loaded up. Then, I tried Android Revolution. THAT one worked flawlessly, besides the fact that I couldn't take screen shots for whatever reason. I should of just left it there. Here's where things go wrong. Then, I tried ViperOneM8. After that, it failed to load up and is now in a endless boot loop. I can't get into fast boot either. However, one time I somehow did manage to get into fast boot, but I didn't see the "recovery" option anymore. So... I'm out of ideas here. I'm really worried I bricked my device for good. My device powers on and everything, it just won't load up any OS, and I can't get into fastboot/recovery. Why I'm mainly worried is I failed to create a back up also. I'm running out of ideas here, and if ANYONE could help me that would be great.
Click to expand...
Click to collapse
first you posted in the wrong forum this goes in Q&A
second what do you mean it won't go into fastboot / recovery ? what happens when your in the bootloader ?
I need the results of fastboot getvar all to determine what files you need to fix your phone ( not you serial no. or IMEI)
most likely your on an older firmware and you have s-on and the Rom you flashed requires s-off and the latest firmware
Gah sorry, I find this forum layout kind of confusing. So this is another problem. I cannot access "getvar", it just says device offline, and I close that command prompt and then the next one just says "please wait," and nothing happens.
What I mean by it won't go into fast boot, is when I hit power + volume down it won't load anything. Here's a pic I found off Google, I can't get to this screen here.
http://img.wonderhowto.com/img/22/98/63533775104674/0/unlock-bootloader-root-your-htc-one-m8.w654.jpg
RadicalMushroom said:
Gah sorry, I find this forum layout kind of confusing. So this is another problem. I cannot access "getvar", it just says device offline, and I close that command prompt and then the next one just says "please wait," and nothing happens.
What I mean by it won't go into fast boot, is when I hit power + volume down it won't load anything. Here's a pic I found off Google, I can't get to this screen here.
http://img.wonderhowto.com/img/22/98/63533775104674/0/unlock-bootloader-root-your-htc-one-m8.w654.jpg
Click to expand...
Click to collapse
Easy way to get into boot loader
Turn on your phone
When it gets into bootloop
Press and hold power+vol up+vol down until screen goes off
As soon as that happens press and hold power+vol down
You'll be in boot loader
And I must say you are a major noob
Navigate to hboot using vol buttons then press power button to select, you'll find recovery
These are just 2 modes hboot and fastboot
From fast boot you can select hboot and vice versa
And also getvar will work ONLY when you're in fastboot mode
Hboot mode is used for accessing recovery
navid0308 said:
Easy way to get into boot loader
Turn on your phone
When it gets into bootloop
Press and hold power+vol up+vol down until screen goes off
As soon as that happens press and hold power+vol down
You'll be in boot loader
And I must say you are a major noob
Navigate to hboot using vol buttons then press power button to select, you'll find recovery
These are just 2 modes hboot and fastboot
From fast boot you can select hboot and vice versa
And also getvar will work ONLY when you're in fastboot mode
Hboot mode is used for accessing recovery
Click to expand...
Click to collapse
I fixed my HTC One M8! Followed some advice on another thread and I just reflashed my TWRP, then I flashed the ROM again and everything is going smooth now!

Bricked M8 after foolish update attempt

Okay, stupid and impatient me wanted to update to CM12.1 without realizing some of the technical issues that I have now discovered....
Long story short, the last thing I did (and first really) , was flashing the boot.img from the CM12.1 zip using fastboot:
Code:
fastboot flash boot boot.img
What I now have is the white HTC boot screen with the red development build text block, and that's it. No recovery, no bootloader, no love.
Am I screwed?
jasonk910 said:
Am I screwed?
Click to expand...
Click to collapse
No, you are not. Nor do I think you did anything stupid, as simply flashing boot.img (as long as you are sure its the right one for the M8) will almost certainly not cause any permanent damage to the phone.
This is simply a no-boot condition; not a brick. Hold power + vol up for 10 seconds or more, until the phone reboots. The moment the screen goes dark to reboot, let go of the buttons, and just hold vol down. Do not let go of vol down, until you see the bootloader screen. Failure to get into bootloader by this method is almost always a matter of just not doing the button combo correctly (the timing if a bit tricky) so just repeat until you get into bootloader.
From there, boot into recovery, restore your nandroid, flash a ROM, etc.
redpoint73 said:
No, you are not. Nor do I think you did anything stupid, as simply flashing boot.img (as long as you are sure its the right one for the M8) will almost certainly not cause any permanent damage to the phone.
This is simply a no-boot condition; not a brick. Hold power + vol up for 10 seconds or more, until the phone reboots. The moment the screen goes dark to reboot, let go of the buttons, and just hold vol down. Do not let go of vol down, until you see the bootloader screen. Failure to get into bootloader by this method is almost always a matter of just not doing the button combo correctly (the timing if a bit tricky) so just repeat until you get into bootloader.
From there, boot into recovery, restore your nandroid, flash a ROM, etc.
Click to expand...
Click to collapse
Fantastic! Recovery backup is restoring as I type. Now to Sunshine, S-OFF, updated HBOOT and THEN CM12.1.
Thanks!
jasonk910 said:
Thanks!
Click to expand...
Click to collapse
There's a button for that.
And you are quite welcome. Happy to see it was that easy.

Stock Boot-Loop, out of options!

I was at work the night before, and my capacitive buttons stopped responding, so I went for a restart in hopes they would kick back on, this just caused my phone to enter a boot loop. Soft resetting and hard resetting both continue the loop, trying to enter recovery mode throws me back into the loop, entering download mode locks the phone on the small HTC screen. I tried to flash the current RUU onto the phone, but it won't proceed with the install due to a low main battery error despite the fact I've had it charging for 6 hours. The only thing I can think of doing now is sending it back in hopes they fix it, but theres a lot of information I ignorantly haven't backed up, and now can't access before sending it back.
If anyone has any helpful tips or ways to move forward I would be grateful.
you might be able to intervene in the process. when the phone restarts (ideally right after it restarts), hold Volume Down until the grey HTC logo appears, From here, you are in the download menu (or what is now basically the fastboot). If you are stock, you can unlock the bootloader if you havent already and flash a custom recovery (TWRP). Being in TWRP will give you USB access to your phone. And it will provide the ability to flash ROMs, including stock ROMs. Beyond that, you could always try a factory reset from either the download or the bootloader, but not much else I think you can do.
Someone might have more information than me though
silegeek said:
you might be able to intervene in the process. when the phone restarts (ideally right after it restarts), hold Volume Down until the grey HTC logo appears, From here, you are in the download menu (or what is now basically the fastboot). If you are stock, you can unlock the bootloader if you havent already and flash a custom recovery (TWRP). Being in TWRP will give you USB access to your phone. And it will provide the ability to flash ROMs, including stock ROMs. Beyond that, you could always try a factory reset from either the download or the bootloader, but not much else I think you can do.
Someone might have more information than me though
Click to expand...
Click to collapse
Doing what you said flashes the grey HTC logo, but then goes back to looping.
Snickie12 said:
Doing what you said flashes the grey HTC logo, but then goes back to looping.
Click to expand...
Click to collapse
Try the same thing, but this time with Volume Up, hold it until the FTM menu appears. From here, you should be able to access the bootloader.
If that also does not work holding Volume Up and Down at the same time takes you straight into the bootloader. Sadly, unless you are S-OFF, there is not a lot you can do from this menu. I dont think it accepts the fastboot commands, particularly fastboot flash commands. But if you can get into the bootloader, and then try each option, download, recovery, etc.
If you get into the recovery, it will be stock (unless you flashed a custom ROM). You have to press volume up twice to access the options, but if you get stuck, hold volume down and power and the touch keys on the bottom flash. After about 15 flashes the phone reboots.
silegeek said:
Try the same thing, but this time with Volume Up, hold it until the FTM menu appears. From here, you should be able to access the bootloader.
If that also does not work holding Volume Up and Down at the same time takes you straight into the bootloader. Sadly, unless you are S-OFF, there is not a lot you can do from this menu. I dont think it accepts the fastboot commands, particularly fastboot flash commands. But if you can get into the bootloader, and then try each option, download, recovery, etc.
If you get into the recovery, it will be stock (unless you flashed a custom ROM). You have to press volume up twice to access the options, but if you get stuck, hold volume down and power and the touch keys on the bottom flash. After about 15 flashes the phone reboots.
Click to expand...
Click to collapse
Holding Volume up just continued the loop, I can get into the bootloader like you said, but theres not very many options, download locks the phone onto the HTC logo and doesn't proceed, the recovery option just restarts the phone into the loop.
Im afraid then, that I am out of suggestions for the time being.
Presumably your phone was charging whilst off, and not boot-looping?
Otherwise you can power down from the bootloader and try charging it. That may give you a better chance with the RUU
silegeek said:
Im afraid then, that I am out of suggestions for the time being.
Presumably your phone was charging whilst off, and not boot-looping?
Otherwise you can power down from the bootloader and try charging it. That may give you a better chance with the RUU
Click to expand...
Click to collapse
Whenever I plug it in while off, it shows the low battery icon and tries to turn itself on.
I had exactly the same problem...were you able to sort it out?
same problem except I can charge mine will I be able to ruu even if it is locked ?
isaac1993 said:
same problem except I can charge mine will I be able to ruu even if it is locked ?
Click to expand...
Click to collapse
Yes you can RUU with the bootloader locked. Actually it's the only way you can RUU.
Capt'n Mal said:
Yes you can RUU with the bootloader locked. Actually it's the only way you can RUU.
Click to expand...
Click to collapse
No,it's not. I'm bl ul,s-off,and I can ruu anytime.
Capt'n Mal said:
Yes you can RUU with the bootloader locked. Actually it's the only way you can RUU.
Click to expand...
Click to collapse
I thought it was charging but now fount out it wont charge
isaac1993 said:
I thought it was charging but now fount out it wont charge
Click to expand...
Click to collapse
Mine does not charge either...and RUU does not work because of the battery < 30%
The funniest thing is that I've never touched this phone either (stock, no s-off, no unlock, no custom recovery, just updated via OTA to get Nougat), it just ran out of battery during the night and found the boot loop the morning after when I plugged it. Can't believe it could turn into a f...ing brick by itself.
singlemalt said:
I had exactly the same problem...were you able to sort it out?
Click to expand...
Click to collapse
No, I had to send it back to HTC and within 2 weeks they sent it back to me completely wiped and reset to factory.
Snickie12 said:
No, I had to send it back to HTC and within 2 weeks they sent it back to me completely wiped and reset to factory.
Click to expand...
Click to collapse
Did they tell you what they did to fix it by chance? Thanks.
singlemalt said:
Did they tell you what they did to fix it by chance? Thanks.
Click to expand...
Click to collapse
No they didn't sorry.
singlemalt said:
Mine does not charge either...and RUU does not work because of the battery < 30%
The funniest thing is that I've never touched this phone either (stock, no s-off, no unlock, no custom recovery, just updated via OTA to get Nougat), it just ran out of battery during the night and found the boot loop the morning after when I plugged it. Can't believe it could turn into a f...ing brick by itself.
Click to expand...
Click to collapse
My friends s7 completly bricked doing the N update. If you havnt done anything to your phone just take it back and get a new one.
Same exact issue here after the Verizon OTA update.
Failed after the first reboot after the update.
The storage was pretty maxed, wonder if that has something to do with it.
silegeek said:
Try the same thing, but this time with Volume Up, hold it until the FTM menu appears. From here, you should be able to access the bootloader.
If that also does not work holding Volume Up and Down at the same time takes you straight into the bootloader. Sadly, unless you are S-OFF, there is not a lot you can do from this menu. I dont think it accepts the fastboot commands, particularly fastboot flash commands. But if you can get into the bootloader, and then try each option, download, recovery, etc.
If you get into the recovery, it will be stock (unless you flashed a custom ROM). You have to press volume up twice to access the options, but if you get stuck, hold volume down and power and the touch keys on the bottom flash. After about 15 flashes the phone reboots.
Click to expand...
Click to collapse
I have very similar htc 10 issue : (
https://www.reddit.com/r/HTC10/comments/9j8nyk/htc_10_oreo_stuck_in_boot_loop_i_can_only_access/
how do you do fastboot commands when only at bootloader screen when you cant access download mode or recovery : ( also my htc 10 was low on stoage space I must have corrupted the htc 10 oreo : (

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