yashsingh1/xdaforums huggingface dataset:
[One (M8) Q&A, Help & Troubleshooting] u-wot-m8:
Just visiting the US.

I'll be using a British SIM card anyway, so LTE wouldn't likely work anyway. I supoose I could start off by flasing the developer edition firmware (1540), then try the individual carriers.

I actually was able to flash the 6.12.1540.4 firmware now. The USA/developer edition of the M8 supposedly does not supprt the LTE bands of my current carrier (3, 7 and 20). However LTE was working on at least 2 of those frequencies. The firmware file did include radio.img, so this basically converted my phone to the US version, right?
[One (M8) Q&A, Help & Troubleshooting] redpoint73:
Unless you want LTE to work in the US, I don't see the point in doing this. As mentioned, the Euro firmware already supports the bands needed for 2G and 3G on both AT&T and T-Mob US. On the downside, flashing the 1540 firmware clearly messes with the LTE bands needed for your current (British?) carrier.

You are converting it to US Dev Ed in terms of firmware (which supports AT&T bands) that is correct. This firmware supports LTE band 7 per the specs. There have also been some reports of various radios/firmwares supporting bands even though those band(s) are not supposed to be official supported by that version (not listed in the specs for that version). So that may be what you are seeing here.
[One (M8) Q&A, Help & Troubleshooting] u-wot-m8:
OK, I'll stick with my EU firmware. Thanks.
[One (M8) Q&A, Help & Troubleshooting] Redonkullous:
Hello all, my device isn't picking up my network provider and need help!

Hey everyone thanks in advanced for reading this. Im having trouble with every ROM I download and flash onto my Sprint HTC M8 HK edition. I consider myself a total noob and after doing a lot of research I think I might have messed up my radio. Ive been looking everywhere for it to just flash it back with recovery but all I find is the sprint radios for the M7 and GSM carriers. Can anyone help me, really need phone to be receiving phone calls. :) P.S. Im also a noob at posting so I am very sorry if i posted this in the wrong place, will remove immediately.
[One (M8) Q&A, Help & Troubleshooting] stanislavski11:
Hi there,

This is my first post here. I'm trying to load stock rom on htc one m8 with frozen boot image.

First about the device:

*** Software status: Official ***

*** Locked ***

M8_UL PVT SHIP S-ON

HBOOT - 3.19.0.0000

RADIO-1.29.214500021.12G

OPENDSP-v51.2.2-00593-M*(&$_FO.1015

OS-6.12.401.4

EMMC-boot 2048MB

I can enter fastboot mode. GETVAR ALL output is:

(bootloader) version: 0.5

(bootloader) version-bootloader: 3.19.0.000

(bootloader) version-baseband: 1.29.2145000

(bootloader) version-cpld: None

(bootloader) version-microp: None

(bootloader) version-main: 6.12.401.4

(bootloader) version-misc: PVT SHIP S-ON

(bootloader) serialno: xxxxxxxxxxxxx

(bootloader) imei: xxxxxxxxxxxxxx

(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: 0.120s

Then I was trying to flash this ruu by issuing commands:

fastboot reboot-bootloader (reboot to bootloader to ensure the connection is good)

fastboot oem rebootRUU (put the device in RUU mode)

htc_fastboot flash zip RUU.zip (to install RUU)

and using this rom "0P6BIMG_M8_UL_M60_SENSE70_MR_HTC_Europe_6.12.401.4_Radio_1.29.214500021.12G_20.72.4196t.01_release_464360_signed.zip".

It started flashing, then message about "Error 90" appeared for a moment. It continued with several messages SUCCESSFUL and then come to the end. Everything was looking fine. Then I rebooted the phone and HTC logo was shown. Then the words "Apps are updating" appeared for several minutes, followed by words "Android is starting up". And phone was stuck in this state.

I tryed flashing that ruu two times in row without reboot, but the final result is the same.

Any ideas?

I'm also trying to get adb session in recovery mode, but my PC wont recognize the phone when the red triangle is shown.
[One (M8) Q&A, Help & Troubleshooting] Einwod:
Did you read anything on this thread? On THIS PAGE even? Literally 7 posts above, EVEN? https://xdaforums.com/showpost.php?p=71396792&postcount=5141

---------- Post added at 14:21 ---------- Previous post was at 14:16 ----------

First, remove the serial and IMEI numbers from your original post. You almost got it right. You need to rename the downloaded RUU.zip file to: 0P6BIMG.zip and place it on the root of your SD card, then boot into bootloader screen. The device will find the file and ask if you want to flash it. It may just start flashing by itself. Wait until it is finished before rebooting the device. You will need to remove the file from the external SD card, or at minimum, rename it to something else, otherwise every time you boot the phone, it will flash the file again.
[One (M8) Q&A, Help & Troubleshooting] Meetsandhu:
I have htc one m8 sprint. I want to flash stock recovery . Please suggest me link to download that and tell me how to flash it
[One (M8) Q&A, Help & Troubleshooting] redpoint73:
What is the reason for flashing stock recovery? If the intent is to OTA update the phone, and it is rooted, you will also need the stock (

never

rooted) ROM (unrooting will not work, OTA will fail). Also FYI, the OTA for Sprint will probably only work while connected to the Sprint network (as is the case for most US variants).

Depending on what you are trying to do, it may just be easier to flash the RUU (will wipe user data):

https://xdaforums.com/showthread.php?t=2729173
[One (M8) Q&A, Help & Troubleshooting] stanislavski11:
Thank you very much for your advice. I solved the problem in very strange way. I finally gave up and decided to take the working motherboard from my second HTC and the screen and body from the problematic device, because they were in better condition. I did the job and then I found that the donor and patient started to work flawlessly. May be disconnecting of battery for about an hour did it.
[One (M8) Q&A, Help & Troubleshooting] Redonkullous:
Thanks for the reply and i already tried RUU's and they dont want to work. I looked everywhere including this thread for a simple Sprint Radio. ( Need this but for the M8 https://xdaforums.com/showthread.php?t=2406330 )
[One (M8) Q&A, Help & Troubleshooting] Jbb3393:
Hello. Was looking into getting my wifi calling feature back. Does anyone know what would be the latest rom that supports that feature? Thanks
[One (M8) Q&A, Help & Troubleshooting] dr.estiack:
Help needed...I bought an old m8...but it doesn't have any boot image...I mean it doesn't enter in fastboot page usually where options like hboot,recovery lies..I think it's refurbished..how can I get back my fastboot plz?
[One (M8) Q&A, Help & Troubleshooting] Einwod:
Does the phone boot into an operating system? Stock? Custom ROM? TWRP? What's on the device now?
[One (M8) Q&A, Help & Troubleshooting] dr.estiack:
yes it is running stock android 4.4.2...and rooted...looks like a refurbished one..bt never seen a htc m8 without bootloader.Really puzzled of what to do.
[One (M8) Q&A, Help & Troubleshooting] Einwod:
How do you know you cannot enter bootloader? What have you tried and what, if any, are the error messages?
[One (M8) Q&A, Help & Troubleshooting] dr.estiack:
power plus vol down...also tried from quickboot...only a pic with charging cable like shows..nothing happens next.
[One (M8) Q&A, Help & Troubleshooting] Einwod:
You keep the power button and volume down pressed and when the screen goes black, release the power. Keep holding the volume down button. If the phone boots into system, there's no reason it cannot boot to bootloader screen.
[One (M8) Q&A, Help & Troubleshooting] ahmed.ismael:
What's happening when you send this command from cmd window ?

adb reboot bootloader
[One (M8) Q&A, Help & Troubleshooting] dr.estiack:
i tried but nothing happens..what i found out that my power button is laggy..responses after 1-2sec..possibility that when i press both actually it works delaying.

---------- Post added at 05:40 PM ---------- Previous post was at 05:39 PM ----------

i didnt yet try from pc..just tried to reboot from phone..i used 2 m8 before including refurbished one... bt never faced this issue.
[One (M8) Q&A, Help & Troubleshooting] Redonkullous:
Need Sprint Radio

Hello I was wondering if anyone can link me to a download of a sprint radio so I can flash it in recovery. Thanks in advanced
[One (M8) Q&A, Help & Troubleshooting] FIFATG:
Ok I tried the process on a 32GB SD card, formatted as FAT32, and still I get a message saying:

"Device halted due to large image. Update failed. Press power to reboot.".

Any ideas how can I update now?..

Reminder: trying to update to a signed RUU from LP to MM on Sense. Can't update via OTA because device needs a lot of internal space. I only have 16GB.
[One (M8) Q&A, Help & Troubleshooting] dr.estiack:
Did anyone suffered from black bootloader issue? Cant see a thing..phone only vibrates and restarts. Id there any fix?
[One (M8) Q&A, Help & Troubleshooting] redpoint73:
It's incredibly confusing trying to follow you, since you posted the same question/issue to 5 or 6 different threads (which is also against forum rules).

---------- Post added at 09:30 AM ---------- Previous post was at 09:28 AM ----------

If the screen comes on in any way, you have a bootloader. Having no bootloader would brick the phone, and have no screen response or charge LED whatsoever.

You either just can't enter the bootloader screen, or have a black screen on bootloader (booted into bootloader, but you just can't

see

what is on the screen).

---------- Post added at 09:31 AM ---------- Previous post was at 09:30 AM ----------

Don't confuse the bootloader with boot image. Boot image (boot.img) is just the kernel, and not the same partition as the bootloader.
[One (M8) Q&A, Help & Troubleshooting] dr.estiack:
Oh sorry..i m sticking to this thread.ignore the other threads plz..i was trying from yesterday..thats why became desperate.

---------- Post added at 02:49 PM ---------- Previous post was at 02:39 PM ----------

Ok..i m telling what i got so far. Its running android 4.4.2 stock sense rooted. Everything is working fine. But when i try to enter bootloader it just gets black and if i keep pressing powe plus vol down a triangle shows.then i had to press power and vol up to reboot.the set has op6b100 written on back.bt cid getter apk shows its sprint 0p6b700 and m8 whl.also it doesnt have fm radio. Cid getter shows suoer cid. But i couldnt check the soff and bootloader from mobile.i dont have a pc right now. So if this recoverable i will manage pc to flash. Need your advice plz.
[One (M8) Q&A, Help & Troubleshooting] redpoint73:
Posting the above from one of your other threads, in hopes of consolidating the discussion.

It would appear you have properly functioning bootloader, but the screen is simply displaying black in bootloader(I've seen this issue posted a while back by another user).

You will really need to get to a PC to properly solve this, so please do so when possible. Reason being, you can't trust the CID getter apps, and you can't trust what is printed on back (back covers are often replaced on refurbished M8 devices, especially Sprint ones). You will need to do a fastboot getvar all, to retrieve the correct and reliable model info, and I also want to see the other getvar info as s-on/s-off, MID, etc.

When you have PC access (and a PC with working fastboot/adb environment), try connecting to the phone. The boot into bootloader (even if the screen is black) and see if you get the phone's serial number as response to the command (don't post the serial number, as it is personal info):

fastboot devices

If so, do: fastboot getvar all

Then post the results (delete serial number and IMEI before posting, as these are personal info).
[One (M8) Q&A, Help & Troubleshooting] dr.estiack:
Thanx alot..i m trying to manage..i will get back to you
[One (M8) Q&A, Help & Troubleshooting] redpoint73:
I'm fairly confident the phone can be fixed. For the past instance of black bootloader screen, flashing the proper RUU fixed the issue. And we can even get you a more updated Android version at the same time.

But we really need to see the getvar data, to properly confirm the M8 version, CID, MID, s-on/off and point you to the correct RUU,

before

you try anything. For the Sprint model in particular, flashing the wrong RUU or firmware can lead to permanent damage.
[One (M8) Q&A, Help & Troubleshooting] dr.estiack:
I got it..plz check
[One (M8) Q&A, Help & Troubleshooting] redpoint73:
Okay, so that's good. As I suspected, you have working bootloader, but the screen is just not displaying properly in bootloader (black screen). Also, as suspected, it is the Sprint version, but made s-off and SuperCID, and back cover replaced.

Try flashing the RUU 4.25.651.18 (Lollipop) from the following thread:

https://xdaforums.com/showthread.php?t=2729173

Flash the RUU either in exe format using your PC (simply run the exe format RUU with the phone connected, in bootloader-fastboot mode like it was when you did the getvar), or use the SD card method, if you have one (if you want to use this method, let me know, I'll advise further).

You may also be able to RUU all the way up to Marshmallow using 6.20.651.3_RUU. However, the US Marshmallow versions have a peculiarity, that you need to take extra steps to flash the firmware 6.20.651.3 (firmware is not to be confused with RUU or ROM, so don't think they are the same thing!) using the instructions on the thread, before you can use 6.20.651.3_RUU.
[One (M8) Q&A, Help & Troubleshooting] dr.estiack:
And my bootloader is unlocked?is it needed to work ahead?
[One (M8) Q&A, Help & Troubleshooting] redpoint73:
Since you are s-off, the RUU will work fine with bootloader unlocked. It is

not

recommended in this case to change the bootloader lock status.

Also, made a couple revisions to my last post, so please read again for further clarifications.
[One (M8) Q&A, Help & Troubleshooting] dr.estiack:
Another question,if i flash the ruu.exe from pc then i will be able to enter bootloader and flash firmware from sd card? Can i flash marshmallow ruu directly without lolipop?
[One (M8) Q&A, Help & Troubleshooting] redpoint73:
You need to flash Marshmallow (MM) firmware

before

MM RUU. Otherwise the RUU will fail (not install).

But otherwise, yes you can flash the firmware by SD card method. Then do RUU by exe method.

Yes.
[One (M8) Q&A, Help & Troubleshooting] dr.estiack:
I m downloading the m firmware..after flashing this bootloader will become normal or stay black..as if it remains black i cant flash from sd card..need a way to do it from pc.
[One (M8) Q&A, Help & Troubleshooting] ahmed.ismael:
Does your bootloader relocked ?

You need a relocked bootloader to flash RUU.zip on s-on device

False

You can do OTA from anything ( L ) to anything ( M ) with any internal storage ( 16 or 32 )
[One (M8) Q&A, Help & Troubleshooting] FIFATG:
Yes. It reads "Relocked" at the top.

How can I take the OTA from LP? I get the same error about image size even from the official OTA from HTC.
[One (M8) Q&A, Help & Troubleshooting] redpoint73:
Once you've renamed the firmware.zip to 0P6BIMG.zip and put it on the SD, insert SD into phone, and reboot to bootloader, it should automatically detect the file 0P6BIMG.zip and install it. I don't think it requires any interaction by you, and therefore doesn't matter if the screen is black.

Once the bootloader has been re-installed/updated by firmware or RUU, I'm hoping that it will fix the black screen on bootloader problem.
[One (M8) Q&A, Help & Troubleshooting] ahmed.ismael:
Try to flash the firmware first !!!!!!!

Or flash the RUU using fastboot

Or Try another card

Let's try it one by one ( pick the easiest one of those above )

---------- Post added at 03:56 PM ---------- Previous post was at 03:54 PM ----------

Volume up to start flashing
[One (M8) Q&A, Help & Troubleshooting] redpoint73:
Good to know. I don't think I've ever actually used the SD method. I always use fastboot. Not for any particular reason, it just hasn't failed me yet.
[One (M8) Q&A, Help & Troubleshooting] FIFATG:
I tried flashing the RUU from fastboot & tried different SD cards. Not working.

I'll try to flash the firmware first as you suggest. Maybe that will do the trick.

After the firmware I need to boot into recovery & flash any MM ROM, right?
[One (M8) Q&A, Help & Troubleshooting] ahmed.ismael:
After flashing firmware only

Flash twrp then boot it and flash any rom you like
[One (M8) Q&A, Help & Troubleshooting] dr.estiack:
i flashed the firmware via fastboot..it showed finished and ok.then it rebooted to os as before...then i copied the op6bimg in sd card and entered bootloader via quickboot..but black as before..after a while i pressed vol up..but still no sign..almost 20 mints..waiting.set is felt cool like switched off.should have heated a bit if flashing was going on,isnt it,?..can i try to flash op6bimg via fastboot?though not sure whether pc will detect it now.
[One (M8) Q&A, Help & Troubleshooting] ahmed.ismael:
It worth a try using pc

If it detect it earlier,nothing will prevent that
[One (M8) Q&A, Help & Troubleshooting] redpoint73:
It's easy to see if PC will detect or not. Like before, connect to your PC and try command: fastboot devices

It will return your device serial number, if it connects. Otherwise, it will just say "waiting".

If it connects, do command: fastboot getvar all

Tell us what it says for version-main, so we can see if the firmware flashed properly or not.

Also, when you flashed the firmware, did you get any error messages about "flush again immediately"? Usually, you will get that error, and will need to flash the firmware again (so flash it two times in total), I forgot to mention that.

You can try the RUU exe method, or if you want to flash the RUU by fastboot, you may get an error about image too large. If so, you will need to use htc_fastboot (I'll advise you, if you get that error).
[One (M8) Q&A, Help & Troubleshooting] dr.estiack:
yes i flashed it twice..the firmware. but when i rebooted the phone was as before. all apps installed as it was..so not sure whether it was flashed. bt pc showed okay and successfull..then i tried to flash the rom from sd card..now my set is not opening.if i press power and vol up it only vibrates..nothing happens..also power plus vol down nothing happens..looks like it bricked..not sure what to do.
[One (M8) Q&A, Help & Troubleshooting] redpoint73:
Try charging for a few hours. Then try holding power+vol up for a minute or more, to see if there is any change. The fact it vibrate when you try to press power + vol up makes me hopeful. If it was a brick, I don't think it would even do that.
[One (M8) Q&A, Help & Troubleshooting] dr.estiack:
i tried to press power plus vol up for minute..it keeps vibrating every 15-20sec...but nothing happens. but set is little hot now.but shows up nothing..it was in charge for 3hrs bt no led light.
[One (M8) Q&A, Help & Troubleshooting] dr.estiack:
bro i am lost...now pc cant detect the phone..fastboot shows waiting for device..only thing happens is my phone vibrates when i press power plus vol up...no other button works.
[One (M8) Q&A, Help & Troubleshooting] dr.estiack:
its only showing this when i connect with power plus vol up
[One (M8) Q&A, Help & Troubleshooting] dr.estiack:
also this..everytime it says unplugged..drivers are installed properly..what should i fo now plz
[One (M8) Q&A, Help & Troubleshooting] mrrocketdog:
i found on black screen issue ; if thats what i'm understanding your dealing with , while holding power + vol up (or vol. down for that matter) the change in blackness is incredibly slight. you have to have phone at the right angle to see the change in blackness. when seen , let go of power.

this was my experience at least. wishing best of luck.

"err on the side of kindness"
[One (M8) Q&A, Help & Troubleshooting] dr.estiack:
power plus vol down doesnt work...bt power plus vol up phn vibrates..bt cant see i checked in dark room.worst part is now fastboot cant detect my phone
[One (M8) Q&A, Help & Troubleshooting] mrrocketdog:
[MENTION=660462]redpoint73[/MENTION] , this may not matter with this particular "black screen issue" but once you are in bootloader i think , been awile so maybe i'm wrong ; dont you have to press power to "get the ball rolling"? then it goes on automatic. flashes file. and says something to the effect of "press power to reboot".

"err on the side of kindness"
[One (M8) Q&A, Help & Troubleshooting] FIFATG:
It worked!

I flashed the firmware via hboot and afterwards I flashed the RUU and it completed successfully. I now run official Sense MM thanks to you.

I was sure you could only do these things with a S-OFF device.

Just a tip for everyone else: the RUU ran in a bootloop for a few minutes, until I disconnected the phone from the PC. Only when the phone wasn't connected via USB cable the RUU ran correctly. I don't know why.

Thanks again, Ahmed. Sorry for all the questions.
[One (M8) Q&A, Help & Troubleshooting] ahmed.ismael:
weird

But glad it worked

Also about the tip thanks for posting it maybe it will be useful for someone,but correct me if i'm wrong

You tried to flash the RUU using hboot while connecting to pc and it looped ? Then after unplugged continued ?

You didn't flash it using fastboot commands ?
[One (M8) Q&A, Help & Troubleshooting] FIFATG:
I booted into hboot, the RUU was detected automatically and it asked me to press volume up to begin flashing.

It started flashing some things (system, recovery, etc), but then it got stuck on a certain line for a few minutes & just repeated the same text over & over.

I disconnected the USB cable from the phone and immediately the process continued & finished successfully.

Same as you, I have no idea why.
[One (M8) Q&A, Help & Troubleshooting] ahmed.ismael:
It's not looped it's unpack and flash

it took about 10 minutes to complete the flashing

You may see system repeating about three times but this how it work

Anyway it's good it worked,now you have a fresh partitions and most up to date :svetius:
[One (M8) Q&A, Help & Troubleshooting] FIFATG:
I see, ok.

Thanks.
[One (M8) Q&A, Help & Troubleshooting] dr.estiack:
any help plz..my set is dead for 2days.
[One (M8) Q&A, Help & Troubleshooting] redpoint73:
From what ahmed stated in Post #5182 (right after my post you quoted), you need to press vol up to flash the update zip file.

So yes, there is some minimal interaction required.

---------- Post added at 09:42 AM ---------- Previous post was at 09:04 AM ----------

Trying to get the phone powered on (in any mode, even if its bootloader with black screen) is really your only hope. The phone will not connect to PC by fastboot nor adb while powered down, by definition. Keep trying the button combos, charging the phone longer, different chargers. Also try the button combos with and without the charger connected, as I've seen folks (for no apparent good reason) have luck that way.

Unfortunately, if the phone doesn't come on (at least) fastboot you're really stuck. And unfortunately this is just a possible outcome of trying to repair the bootloader; even though firmware is an official signed HTC file. It's possible there was something wrong with the device before, such as emmc going bad, that was causing the black bootloader screen to begin with, that just became worse when trying to flash the firmware.