D820N single sim, No recovery bootloop - Desire 820 Q&A, Help & Troubleshooting

Hello all,
suddenly and without any prior warning my Desire 820N rebooted and since then it is in a boot loop,
the ROM is original/Stock lollipop, I can enter HBoot, fastboot.
when choosing Recovery or Factory Reset the phone reboots immediatly.
tried erasing cache using fastboot, flash recovery.img I found online,
I even managed to successfully flash the following rom through RUU and also directly through the SD card
0PFJIMG_A51_UL_L50_DESIRE_SENSE60_MR_HTC_Europe_2.10.401.4_Radio_01.01.010_U10305041_08.01.50512_release_460795
but after the flashing finishes and I reboot, as if nothing happened at all.
Could this mean that the mmc storage is corrupted, or am i facing another problem?
following is the phone details:
Desire 820n Single Sim
A51_UL PVT SHIP S-ON
HBOOT-3.19.0.0000
RADIO-01.01.010_U10305041_08.01.50512
OS-2.10.401.4
eMMC-boot 2048MB OC
Nov 13 2015,18:02:23.0
Update
Attached the dmesg log I got from fastboot.

Desire 820n Single Sim 5.0.2 stock. EURO flash TWRP https://yadi.sk/d/dEwiblxjmieVS

vuk1963 said:
Desire 820n Single Sim 5.0.2 stock. EURO flash TWRP https://yadi.sk/d/dEwiblxjmieVS
Click to expand...
Click to collapse
Thanks @vuk1963, but I don't have twrp and even the stock recovery does not work.

1. Press 2 Volume button and the power button and hold for a long time 2 debugging usb enabled? 3 to unlock the bootloader using fastboot,https://yadi.sk/d/C5ZYzOL-k4dco

android is not working, so how can I enable usb debugging?
i'm in a boot loop, the htc logo appears then after 20 seconds it reboots again.

BTW, I unlocked the bootloader before using htcdev, but even though after flashing firmware or flashing recovery.img, nothing happens
and I don't have TWRP, could you send me a link or is it included in the first link?
thanks again

I unlocked the bootloader again, successfully flashed twrp, but when entering recovery, it does not work and the phone reboots after around 10 seconds.

So for debugging is usb enabled? it is important!!! Telephone in the bootloader(fast usb)phone to connect to the computer,unzip the file on your computer(5.0.2 HTC_D820 official recovery)click the mouse on the file https://yadi.sk/d/ojb92-nOr3d5d
---------- Post added at 11:12 AM ---------- Previous post was at 10:52 AM ----------
Press 2 Volume button and the power button and hold for a long time ,when the black screen, press 1- the volume button and _ power button (to enter the bootloader)
---------- Post added at 12:09 PM ---------- Previous post was at 11:12 AM ----------
How are things with your phone?
---------- Post added at 12:11 PM ---------- Previous post was at 12:09 PM ----------
the problem is solved?

I can't enable USB Debugging because I only have HBoot, Fastboot.
I installed the official recovery, but it's not working.
when I click on Recovery, it reboots, then it shows 'Entering recovery', after 10 seconds it reboots again but recovery does not work.
Thanks for your help.

What version of the software on the phone right now? 4.4.4 or 5.0.2 (it is important!!!)

lollipop, 5.0.2

stock 5.0.2 https://yadi.sk/d/Jz95CoeSr4ULo Telephone in the bootloader, fast usb, computer unzip flash-recovery stock for 5.0.2 ,click the mouse on the flash-recovery, menu select f and press enter

Ok, thank you.
I will try it later when I get back home.

Ok, flashed the recovery but it doesn't work also.

Telephone in the bootloader, fast usb, unzip the downloaded file,on your computer and run the file by clicking on the mouse,flash TWRP,from bootloader,In Recovery,from Recovery In TWRP,То TWRP advanced Wipe Mark х Dalvik Cache and Cache Swipe to Wipe. If this does not fix the problem,You will need to format and install the system on a formatted phone memory through TWRP https://yadi.sk/d/ZybWB0jpr4qtc

Flashed successfully, but the same result, no recovery.
btw, i got the dmesg log from fastboot, see the following errors:
[PG_ERROR] htc_pg_part_hdr_set(647):[1564461] part_hdr->size is too large
[PG_ERROR] check_pgfs(1440):[1564525] pg2fs add wifi error
[ERR] Get property `adsp_ver' failed with returned value -1

Phone enters TWRP recovery?

No twrp recovery, no stock recovery.

(Telephone in the bootloader, fast usb, unzip the downloaded file,on your computer and run the file by clicking on the mouse,flash TWRP,from bootloader,In Recovery,from Recovery In TWRP) You did?

yes I did, after that I press on Recovery, then it writes entering recovery, and after 10 seconds it reboots again and again and again.

Related

hd desire every app crash?

Hi i just get one htc desire hd.I have problem that sence just restarting and every setup is back when phone restar.I uninstall some app and phone restart itself and app is still there?I want to install new room BUT to install need to have recovery,and for recoveru need to be rooted.How to root when all time just restart and crash?And often stuck on htc logo a leave but it not boot into system.Any idea?
You don't need to be rooted to flash a recovery. You need an unlocked boot loader or s off. What are your boot loader details?
marknoll said:
You don't need to be rooted to flash a recovery. You need an unlocked boot loader or s off. What are your boot loader details?
Click to expand...
Click to collapse
s-off and how to flash recovery?i meen what is order flash some recovery then rom?Root is not need???
Root is a term describing being able to access system files to either alter or add. U only need an unlocked boot loader and or s off to flash a recovery. If u stay s on with unlocked boot loader, you will have to flash Roms via fastboot
---------- Post added at 02:07 AM ---------- Previous post was at 02:05 AM ----------
Yes. The order should be..unlock boot loader...flash a recovery,then flash a rom
---------- Post added at 02:14 AM ---------- Previous post was at 02:07 AM ----------
http://lifehacker.com/how-to-flash-a-rom-to-your-android-phone-30885281
---------- Post added at 02:40 AM ---------- Previous post was at 02:14 AM ----------
http://forum.xda-developers.com/showthread.php?t=1745050
And this
---------- Post added at 02:43 AM ---------- Previous post was at 02:40 AM ----------
And this for s on
http://forum.xda-developers.com/showthread.php?t=2475502
i do this http://www.htcdev.com/bootloader/unlock-instructions
and suck on step 4. i download for win start but there is erro no file AdbWinApi.dll so i download and put insto c/windows/ system and then just flash for sec cmv window
and can not do this http://www.htcdev.com/bootloader/unlock-instructions/page-2
Simplest method ever discovered....
Megasp said:
i do this http://www.htcdev.com/bootloader/unlock-instructions
and suck on step 4. i download for win start but there is erro no file AdbWinApi.dll so i download and put insto c/windows/ system and then just flash for sec cmv window
and can not do this http://www.htcdev.com/bootloader/unlock-instructions/page-2
Click to expand...
Click to collapse
If you want easiest way to unlock bootloader without following steps from htcdev.com! Then you should be doing these;
Open Chrome on pc.Make sure it translate everything you see there.
Go to site: http://www.mgyun.com/romasterlab
Download: Current v3.4.6
Run it.Though it's chinese but No worries its completely safe to use. I've used to unlock my device's bootloader.It only supports HTC and Sony. So after installing it connect your device.
Once you'll see it's connected,check the attachment.
Click on lock icon,will prompt bla...bla...bla... hit next,device will prompt you to ***ATTENTION*** something related to unlocking bootloader etc. Hit next. Click up or down vol. button to choose and then hit power button to confirm. And you're done.
You may check into hboot later on it will say ***UNLOCKED***
**You may do the same thing relock it.
Um. U said that u are already s off..unless I misread that post of yours
Yes but my phone forse close on every app.and have stock recovery and not root.How instal custom recovery via stock recovery?Because when i connect my phone on pc phone get random restart and app crash BUT in hboot dont restart on my screen when i go in hbot mode it wrote:
ACE PVT SHIP S-OFF RL
HBOOT-2.00.0027
MICROP-0438
RADIO-26.14.04.28_M
eMMC-boot
sep 7 2011 19-06-24
hboot
FASTBOOT
RECOVERY
FACTORY RESET
SIMLOCK
IMAGE CRC
and often just stuck on htc logo so i must pul out batery and put back in an sometimes boot up
I try this but problem that is phone block and forse close when booted.Can i flash rom or custom recovery without boot device just from hboot meny?Or signed rom ?With stock i can flash signed rom?
i found this http://androidruu.com/getdownload.php?file=Ace/RUU_Ace_Sense30_S_HTC_WWE_3.12.405.1_R_Radio_12.65.60.29_26.14.04.28_M_release_233505_signed.exe
and i know how it works but in my case i go in fast boot plug in phone start ruu on pc and all is automatic but when need to boot i mean restart device wait boot loader phone just stuck on htc logo and that it??? and error show ofcourse
I finaly manage to do ruu same os just reinstall via fast boot.But all data is still there and if i uninnstall after restart they are back just i did not uninstall???Maybe demage rom or what?And when start phone virate about 5 times,and sometimes stuck on htc logo pull out battery and back and phone boot
and i notice when try to clear cashe i get error e: can't open/cache/recovery/command looks like rom memory is lock somehow
Fix it yet?
Plug in PC. Open cmd prompt. Type adb devices to see if PC recognizes device. If it does type adb reboot bootloader.. Then type fastboot devices. Post outcome

how to root marshmallow h815 v20a?

Hi
need to know whats the steps to root marshmallow
currently device running stock marshmallow .phone, adb, fastboot and download mode working fine but no any recovery installed, i see error icon when i execute command adb reboot recovery.
can i flash 20A repacked boot.img via fastboot command ? whats the command used for it ? because am trying to flash via recovery but no way to access on it, its seems there is no any recovery on phone.
thanks
how you did then with octopus ? you paid the liscence activation 100 dollars? you know if that workes you can help very a lot of people on the forum.....
---------- Post added at 06:20 PM ---------- Previous post was at 06:14 PM ----------
the prize on your website for octopus +lg and sam activation its 200 dollars ... lol
To flash image files via fastboot, go into Developer Options and make sure 'Enable OEM unlock' and 'Enable USB debugging' are both ticked. You should then be able to flash the recovery image in fastboot by using fastboot flash recovery <filename>.img. To then get into recovery, boot into the device as normal and then use the 'adb reboot recovery' command. You can also get into recovery by turning the phone off, then holding the power and volume down keys. When you see the LG logo, let go of the power button for a second and start holding it again, whilst keeping the volume down button held. You should then get a screen asking if you want to factory reset the device. Choose Yes both times using the volume keys and the power button. Don't worry, this won't actually reset your device, it should load up the recovery.
The method I used for rooting, once on stock Marshmallow, was flashing this rooted kernel and then this SuperSu zip in recovery. Don't forget to backup at least your system partition before flashing.

HTC M8 dual sim hard brick no boot no recovery no led light. no usb sound,no charging

First i give 1 solution who can not go to boot loader 100 % working.
only if you have not done anything to bootloader.
connect usb to laptop.
then press power first + vol down then after 1 sec connect usb to mobile. bootloader will come up.
my problem now :
sorry for bad english.
i have htc m8 dual sim.
it got fallen from me. then it stopped running.
then i searched .then i cam came to found that i can goto bootloader. i did but i cant goto recovery,or factory reset. then i open check crc image all was ok. but sbl2 and sbl3 was 0X0.
then i unlock the bootloaer.
then i tried to flash rom via fastboot which i had access but unsuccess(remote signature verfiy fail.)
in another post i flash the twrp recovery but red text came. then in another post i found that
first flash the recovery. then boot the recovery.
i did like this,
htc_fastboot flash recovery twrp.img
then
htc_fastboot boot twrp.img
htc_fastboot reboot
that was tha last thing i do. after this my phone did respond.
not boot up.
black screen.
led dont turn on.
did all the combination that worked before this. not work now.
press power+volume up the vol down.
press [power for 1,2,3 5 min.
when plug to laptop doesnt work.(htc driver are installed, htc sync installed then uninstalled).
all unsuccessfull.
plz help me
plz
plz help i need it very much
fmtanveer said:
First i give 1 solution who can not go to boot loader 100 % working.
only if you have not done anything to bootloader.
connect usb to laptop.
then press power first + vol down then after 1 sec connect usb to mobile. bootloader will come up.
my problem now :
sorry for bad english.
i have htc m8 dual sim.
it got fallen from me. then it stopped running.
then i searched .then i cam came to found that i can goto bootloader. i did but i cant goto recovery,or factory reset. then i open check crc image all was ok. but sbl2 and sbl3 was 0X0.
then i unlock the bootloaer.
then i tried to flash rom via fastboot which i had access but unsuccess(remote signature verfiy fail.)
in another post i flash the twrp recovery but red text came. then in another post i found that
first flash the recovery. then boot the recovery.
i did like this,
htc_fastboot flash recovery twrp.img
then
htc_fastboot boot twrp.img
htc_fastboot reboot
that was tha last thing i do. after this my phone did respond.
not boot up.
black screen.
led dont turn on.
did all the combination that worked before this. not work now.
press power+volume up the vol down.
press [power for 1,2,3 5 min.
when plug to laptop doesnt work.(htc driver are installed, htc sync installed then uninstalled).
all unsuccessfull.
plz help me
plz
Click to expand...
Click to collapse
can i force to qhusb load 9008. or 9006 like lg g2 ?
is there any solution of this ?
i have also opened the motherboard... i will also go for hardware shortening circiut or anything like this...
You've posted in 4 or 5 different threads, which makes it very hard to follow or help.
The phone was dropped, and stopped working. You now have broken hardware. Dinking around with the software/firmware isn't going to fix anything.
---------- Post added at 09:40 AM ---------- Previous post was at 09:35 AM ----------
fmtanveer said:
then i tried to flash rom via fastboot which i had access but unsuccess(remote signature verfiy fail.)
Click to expand...
Click to collapse
You mean an RUU? You can only flash an RUU that is intended for your CID,MID (dual SIM M8).
You also need to have a locked or relocked bootloader to run RUU (unless you have s-off).
fmtanveer said:
in another post i flash the twrp recovery but red text came.
Click to expand...
Click to collapse
Red text is normal after unlocking bootloader and flashing a custom recovery.
---------- Post added at 09:43 AM ---------- Previous post was at 09:40 AM ----------
fmtanveer said:
i have also opened the motherboard... i will also go for hardware shortening circiut or anything like this...
Click to expand...
Click to collapse
I have no idea what that means "shortening circuit"?
Replacing the motherboard may be an option. But unless you are very experienced with this type of thing, and know exactly what you are doing, you should have it done professionally. Folks will frequently break something else while trying to replace the mobo, or come up with errors/issues they can't resolve.

Cannot enter download mode

I want to flash TWRP but just discovered that i cannot enter download mode.
I can enter bootloader mode (white screen), recovery mode. But as long as i try to enter download mode i see small HTC logo then after a while phone reboots again and go normal android boot.
I've tried to enter download mode from bootloadr, from recovery, from adb "adb rebood download"
Result is always the same.
FW 1.80.709.
What i'm doing wrong??
fastboot oem rebootRUU also doesn't boot into download mode. Same small HTC logo and then reboot automatically into normal android boot.
Can anyone help?
from bootloader mode i cannot even flash firmware.zip to correct possible errors. Such a stupid developers are in HTC - don't leave any chance to fix the problem!
very angry at HTC!
I had many Samsung devices, and ASUS Zenfone - and never had such stupid softbrick...
Everything is done from download mode. Seems like your out of luck. Maybe put a description what you have done to your phone prior this happening.
Nothing special i did.
Bought this phone couple months ago. Had no time to configure it, so it just laid on table. I only unlocked the bootloader through htcdev site and was updating it when new fw out. And yesterday i've decided to start to use it. The first thing i wanted to do is flash TWRP. And discovered that i can't enter to download mode.
Probably the last OTA wasn't sucessful because phone didn't restart when finished updating.
That could be the cause....
Tryed a factory reset?
yldlj said:
Tryed a factory reset?
Click to expand...
Click to collapse
of course
Probably the part where download mode code is, didn't update to v1.80 and thus don't agree with bootloader.
Although, HTC has long history in PDA/Phone manufacturing, they still don't know how to write the proper code. They don't understand how to write protected bootloader with high resistance to bricks. Why they don't allow to flash protected partitions with OFFICIAL SIGNED images?? Stupidity!
They should learn from Samsung and even ASUS how to write correct bootloaders.
"You asked for it, we delivered" in boot unlock page looks like loud laughing to their customers
sorg said:
I want to flash TWRP but just discovered that i cannot enter download mode.
I can enter bootloader mode (white screen), recovery mode. But as long as i try to enter download mode i see small HTC logo then after a while phone reboots again and go normal android boot.
I've tried to enter download mode from bootloadr, from recovery, from adb "adb rebood download"
Result is always the same.
FW 1.80.709.
What i'm doing wrong??
Click to expand...
Click to collapse
DId you ever get your phone working? I can't enter download mode either, which means I can't flash any recovery. I can boot to the bootloader and fastboot recognizes a devices but adb doesn't from the bootloader screen and i get stuck in a bootloop if i try to select the boot to recovery or download mode options. So i also can't boot into recovery.
I pretty desperate at this point. I don't know what to do. The bootloader says
software status: official
unlocked
s-off
bootloader screen also says:
DDR TEST (LOOPING)
and I'm not sure what that means.
I tried to use an RUU and it always gave me the error saying my battery was below 30% so it can't continue. I also can't get into RUU mode using the fastboot command. It starts the bootloop again.
Extract hosd.img from your current firmware.zip and flash in bootloader.
Fastboot flash hosd hosd.img
Had the same issue with my M9 before.
I've repaired in HTC service center. And since i had to request new key to unlock the bootloader (old key didn't work) - they've replaced motherboard!
hi there,
did you manage to fix the problem? im having the exact same issue...please advise if do so...thanks
CPUser20 said:
DId you ever get your phone working? I can't enter download mode either, which means I can't flash any recovery. I can boot to the bootloader and fastboot recognizes a devices but adb doesn't from the bootloader screen and i get stuck in a bootloop if i try to select the boot to recovery or download mode options. So i also can't boot into recovery.
I pretty desperate at this point. I don't know what to do. The bootloader says
software status: official
unlocked
s-off
bootloader screen also says:
DDR TEST (LOOPING)
and I'm not sure what that means.
I tried to use an RUU and it always gave me the error saying my battery was below 30% so it can't continue. I also can't get into RUU mode using the fastboot command. It starts the bootloop again.
Click to expand...
Click to collapse
In a similar boat here - 1-week-old HTC 10 bricked
I flashed the Nougat OTA zip successfully, then realized that TWRP doesn't yet work with Nougat. I tried flashing back to M with fastboot flash zip m_ruu.zip, but fastboot refuses to downgrade.
So I went into download mode, and flashed a backup of M's boot partition with fastboot flash boot m_boot.img, thinking that this will allow me to downgrade the other partitions back to M. Ooops.
Now I can only get to the white background bootloader screen, but neither download mode, nor recovery, nor system.
I tried flashing both M's and N's hosd image, and neither will allow booting into download mode. As mentioned in previous posts, unless you can boot into download mode, you can't flash any other partition.
Furthermore, looks like you can only flash an HTC-signed kernel / initramfs to the hosd partition. I tried flashing both M's / N's boot image to hosd, and in both cases got an error saying it failed ASN1 verification.
Sad :crying:
Maybe this will help:
http://forum.xda-developers.com/showpost.php?p=69870232&postcount=974
Tarima said:
Maybe this will help:
http://forum.xda-developers.com/showpost.php?p=69870232&postcount=974
Click to expand...
Click to collapse
Nope...on the white background bootloader screen, when trying to flash (with fastboot) any other partition except hosd, I'm getting
Code:
sending 'radio' (54625 KB)... OKAY
writing 'radio'... FAILED (remote: cannot flash this partition in s-on state)
...but I can't figure out how to s-off in the current state either. Sunshine is an APK and requires the phone to boot into system. XTC2Clip's s-off instructions require entering into recovery mode.
Flashing different firmwares & RUUs without s-off is a big gamble
Sent from my HTC6545LVW using XDA-Developers mobile app
---------- Post added at 10:03 PM ---------- Previous post was at 10:01 PM ----------
jichuan89 said:
In a similar boat here - 1-week-old HTC 10 bricked
I flashed the Nougat OTA zip successfully, then realized that TWRP doesn't yet work with Nougat. I tried flashing back to M with fastboot flash zip m_ruu.zip, but fastboot refuses to downgrade.
So I went into download mode, and flashed a backup of M's boot partition with fastboot flash boot m_boot.img, thinking that this will allow me to downgrade the other partitions back to M. Ooops.
Now I can only get to the white background bootloader screen, but neither download mode, nor recovery, nor system.
I tried flashing both M's and N's hosd image, and neither will allow booting into download mode. As mentioned in previous posts, unless you can boot into download mode, you can't flash any other partition.
Furthermore, looks like you can only flash an HTC-signed kernel / initramfs to the hosd partition. I tried flashing both M's / N's boot image to hosd, and in both cases got an error saying it failed ASN1 verification.
Sad :crying:
Click to expand...
Click to collapse
You should be 100% to RUU. It's just a good practice
CPUser20 said:
DId you ever get your phone working? I can't enter download mode either, which means I can't flash any recovery. I can boot to the bootloader and fastboot recognizes a devices but adb doesn't from the bootloader screen and i get stuck in a bootloop if i try to select the boot to recovery or download mode options. So i also can't boot into recovery.
I pretty desperate at this point. I don't know what to do. The bootloader says
software status: official
unlocked
s-off
bootloader screen also says:
DDR TEST (LOOPING)
and I'm not sure what that means.
I tried to use an RUU and it always gave me the error saying my battery was below 30% so it can't continue. I also can't get into RUU mode using the fastboot command. It starts the bootloop again.
Click to expand...
Click to collapse
Sent from my HTC6545LVW using XDA-Developers mobile app
I tried to use an RUU and it always gave me the error saying my battery was below 30% so it can't continue. I also can't get into RUU mode using the fastboot command. It starts the bootloop again.
And i've left the phone charging over a longer time period, but every time i plug the phone in while it's off, the Orange LED light turns on, then the battery icon pops up, and then the phone turns on and its begins looping all over again. I read here on XDA that the phone isn't charging unless the LED light is registering a signal.
Ultimately, an RUU doesn't work for me. I get the error saying my battery is below 30%, and it aborts. I'd really like to get it running again so any help will be very much appreciated.
sjpritch25 said:
Flashing different firmwares & RUUs without s-off is a big gamble
Sent from my HTC6545LVW using XDA-Developers mobile app
---------- Post added at 10:03 PM ---------- Previous post was at 10:01 PM ----------
You should be 100% to RUU. It's just a good practice
Sent from my HTC6545LVW using XDA-Developers mobile app
Click to expand...
Click to collapse
sjpritch25 said:
Flashing different firmwares & RUUs without s-off is a big gamble
Click to expand...
Click to collapse
You are absolutely right, it was totally dumb :crying:
Unbelievable - I actually managed to unbrick my HTC 10!! :victory::victory::victory: I still don't understand exactly what happened, but I'll document everything I did...
Before:
S-ON
Flashed bad boot image in download mode
Could not enter download, RUU, recovery, or system mode - all of them enter into bootloop
Could only enter white background bootloader mode (Volume Up + Volume Down + Power), which only allows flashing signed hosd image
What I did:
Followed @Tarima's link above. With the phone in the white background bootloader mode, I ran fastboot flash $x $x.img with $x = each of the partitions. Except for hosd, all the other commands printed an error like
Code:
sending 'xbl' (1809 KB)... OKAY
writing 'xbl'... FAILED (remote: cannot flash this partition in s-on state)
but I continued anyway.
Selected "REBOOT TO BOOTLOADER" from white background bootloader
Downloaded an RUU exe file from here (I got the 1.96.617.20 version, but in hindsight it probably doesn't matter which version), and extracted an RUU zip file (following this guide on Linux)
Renamed the RUU ZIP to 2PS6IMG.zip, copied it to the root of an empty FAT32-formatted microSD card, and inserted the card into the HTC 10 (inspired by this post and this post)
Selected "BOOT TO DOWNLOAD MODE" from white background bootloader
This triggered a screen prompting whether to install update from SD card (photo).
I didn't need to actually install the update from the SD card; instead, the presence of a valid update on the SD card may have short-circuited whatever was causing the download mode to crash loop, and allowed the phone to enter download mode and accept fastboot flash commands. Since my problem was a bad boot image, I just did
Code:
fastboot flash boot boot.img
with the boot.img extracted from the official Nougat OTA zip's firmware.zip, and it worked! Phone was able to boot back into system / download / RUU / recovery. :victory:
I'd already given up hope and bought another HTC 10 off Swappa I've now learned my lesson and I'm going to S-OFF at once.
jichuan89 said:
Unbelievable - I actually managed to unbrick my HTC 10!! :victory::victory::victory: I still don't understand exactly what happened, but I'll document everything I did...
Before:
S-ON
Flashed bad boot image in download mode
Could not enter download, RUU, recovery, or system mode - all of them enter into bootloop
Could only enter white background bootloader mode (Volume Up + Volume Down + Power), which only allows flashing signed hosd image
What I did:
Followed @Tarima's link above. With the phone in the white background bootloader mode, I ran fastboot flash $x $x.img with $x = each of the partitions. Except for hosd, all the other commands printed an error like
Code:
sending 'xbl' (1809 KB)... OKAY
writing 'xbl'... FAILED (remote: cannot flash this partition in s-on state)
but I continued anyway.
Selected "REBOOT TO BOOTLOADER" from white background bootloader
Downloaded an RUU exe file from here (I got the 1.96.617.20 version, but in hindsight it probably doesn't matter which version), and extracted an RUU zip file (following this guide on Linux)
Renamed the RUU ZIP to 2PS6IMG.zip, copied it to the root of an empty FAT32-formatted microSD card, and inserted the card into the HTC 10 (inspired by this post and this post)
Selected "BOOT TO DOWNLOAD MODE" from white background bootloader
This triggered a screen prompting whether to install update from SD card (photo).
I didn't need to actually install the update from the SD card; instead, the presence of a valid update on the SD card may have short-circuited whatever was causing the download mode to crash loop, and allowed the phone to enter download mode and accept fastboot flash commands. Since my problem was a bad boot image, I just did
Code:
fastboot flash boot boot.img
with the boot.img extracted from the official Nougat OTA zip's firmware.zip, and it worked! Phone was able to boot back into system / download / RUU / recovery. :victory:
I'd already given up hope and bought another HTC 10 off Swappa I've now learned my lesson and I'm going to S-OFF at once.
Click to expand...
Click to collapse
Similar thing happened to me .. I'm S-ON and had been flashing the proper firmwares from the get go by renaming them to 2PS6IMG with no problems.. then I upgraded to N firmware and it was smooth sailing.. then i decided to start fresh and formatted. That's when the problem of not being able to get into download mode started. I guess formatting did something to the partition I dunno.. anyway I did your steps of formatting a new sd in my phone as FAT32, dropped the 2PS6IMG zip on the card and it triggered download mode.. really strange.. thanks for posting your steps :good:
Glad to know it helped :victory:

BRICKED HTC Desire 816 A5_UL, Bootloop, No ROM, No Custom Recovery, No USB Debugging.

My bootloader is unlocked and I can't do anything using adb because my Windows 10 does not recognize the USB.
When I try running cmd and "adb devices" it says "List of devices attached" and nothing is below it.
When I try CWM Recovery.exe it says "[Waiting for device]"
Note:
- I flashed a bad ROM that bricked my phone, black screen whenever I boot the ROM.
- Before the flash I had TWRP recovery, after the flash my custom recovery was gone.
same problem
after using twrp official app i lost my recovery phone shows entering recovery continuosly. i hope someone may help us
JVova said:
My bootloader is unlocked and I can't do anything using adb because my Windows 10 does not recognize the USB.
When I try running cmd and "adb devices" it says "List of devices attached" and nothing is below it.
When I try CWM Recovery.exe it says "[Waiting for device]"
Note:
- I flashed a bad ROM that bricked my phone, black screen whenever I boot the ROM.
- Before the flash I had TWRP recovery, after the flash my custom recovery was gone.
Click to expand...
Click to collapse
Make sure you have the latest drivers installed / HTC Sync Manager. Try flashing an older version of CWM via sideload flash it at least 2 times.
---------- Post added at 09:41 AM ---------- Previous post was at 09:36 AM ----------
asharali999 said:
after using twrp official app i lost my recovery phone shows entering recovery continuosly. i hope someone may help us
Click to expand...
Click to collapse
Press [Power Button] + [Volume Up Key] then once the phone turns off enter bootloader with [Power Button] + [Volume Down Key]. Try booting normally and flash an older version with the Official TWRP app I'm using TWRP version 2.8.6.0 A5 img. Hope this helps!
same problem but cant find any solution

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