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HTC One M7 won't boot up after installing custom kernel

I'm not very into phones, but I wanted to make my HTC to wake by double tapping the screen. I've learned that to be able to do that, I have to use a custom kernel, like Bulletproof, and to install a custom kernel, I must first unlock my bootloader (which I've managed to do so on htcdev.com), and then flash TWRP on my phone. There wasn't any problem flashing TWRP, my phone worked just fine. But then I installed Bulletproof kernel on my phone, rebooted it, and after the HTC logo my phone just resets, and goes into recovery mode (TWRP). I've tried installing other kernel, called ElementalX, but the problem is the same. I've also tried this http://forum.xda-developers.com/htc-one/orig-development/kernel-stock-reset-kernel-m7-gpe-t2963290 guide to install stock kernel, but after booting it just shows the htc logo and does nothing else. My phone was running Lollipop 5.0.1.
Please help! And sorry for my bad English.

You're on official stock 5.0.2? how did you install the custom kernel? I installed elementalx when I was on nusenseven sense 7 ROM and I didn't have any problems. Did you flash the right zip file for your Android version and then wipe cash and dalvik/ART cash?
What version of twrp are you on? I recommend flashing twrp 3.0.0
Did you make a full nandroid backup using the custom recovery before you flashed the kernel? If yes just restore it.
If no, try wiping cash and dalvik/art cash then reboot. If that doesn't work I'd flash the latest twrp then copy your valuable files from your phone to a USB using twrp's native file manager because you'll probably have to wipe everything in order to fix your phone.
If non of the above works, go to fastboot and type fastboot getvar all. Then post the result here after deleting your imei and serial No.

monrokhoury said:
You're on official stock 5.0.2? how did you install the custom kernel? I installed elementalx when I was on nusenseven sense 7 ROM and I didn't have any problems. Did you flash the right zip file for your Android version and then wipe cash and dalvik/ART cash?
What version of twrp are you on? I recommend flashing twrp 3.0.0
Did you make a full nandroid backup using the custom recovery before you flashed the kernel? If yes just restore it.
If no, try wiping cash and dalvik/art cash then reboot. If that doesn't work I'd flash the latest twrp then copy your valuable files from your phone to a USB using twrp's native file manager because you'll probably have to wipe everything in order to fix your phone.
If non of the above works, go to fastboot and type fastboot getvar all. Then post the result here after deleting your imei and serial No.
Click to expand...
Click to collapse
Probably flashed the wrong version for his rom version, like you suggested. Most kernel issues can easily be solved simply by flashing back the stock kernel, no need to restart from scratch. If he did a backup, simply restore the boot partition, wipe caches and reboot
Sent from my HTC One using XDA Labs

Failed update :/

Right guys, I was on the Android Nougat nbd90z (flashable & image, no encryption, no dm verification) ROM and an update icon notification did pop up. In the heat of the moment I tried to update and now whatever I do phone constantly reboots to TWRP. I even tried to restore to old backup and nothing helps, phone boots into recovery...
HELP

xywojtek said:
Right guys, I was on the Android Nougat nbd90z (flashable & image, no encryption, no dm verification) ROM and an update icon notification did pop up. In the heat of the moment I tried to update and now whatever I do phone constantly reboots to TWRP. I even tried to restore to old backup and nothing helps, phone boots into recovery...
HELP
Click to expand...
Click to collapse
To update via OTA, you need to be completely on stock.
Go to TWRP and wipe system,cache,dalvik cache partition and flash rom again. Take nandroid backup first.

If you're in TWRP you can easily sideload the OTA in TWRP's Advanced/Sideload - the OTA & instructions are here:
https://developers.google.com/android/nexus/ota#shamu

There isn't an OTA posted just the version you're on
Sent from my Nexus 6

Except that it's not working...?

ok, it's sorted after going into bootloader and a few random actions in TWRP. I still can not understand how nandroid restore did not work?

Stuck on "WARNING BOOTLOADER UNLOCKED" screen

I just unlocked my bootloader using Sunshine and then I flashed twrp and when I went to reboot my phone twrp asked if I want to install SU so i hit yes and it went through its process and now my phone will not boot. Is there anything I can do?
Edit: Thanks for the responses TheSt33v fixed my problem.

Hopefully you unlocked the bootloader before taking the latest OTA to marshmallow?

He couldn't have used Sunshine on Marshmallow. He had to be on Lollipop.

ylevanSnavely said:
I just unlocked my bootloader using Sunshine and then I flashed twrp and when I went to reboot my phone twrp asked if I want to install SU so i hit yes and it went through its process and now my phone will not boot. Is there anything I can do?
Click to expand...
Click to collapse
Go to the development section of the Droid Turbo forum and pick out the rom you want. If you downloaded a stock lollipop rom, download SuperSU from here: https://s3-us-west-2.amazonaws.com/supersu/download/zip/SuperSU-v2.79-201612051815.zip. If you downloaded the stock marshmallow rom, download this version of supersu in addition to the one above: https://download.chainfire.eu/751/SuperSU/. If you downloaded a CM-based rom, you don't need supersu. Boot into TWRP. Use TWRP to wipe system, cache and dalvik cache (this will not wipe any of your apps, pictures, or other user data). Plug your phone into your computer and transfer both the rom and supersu(s) that you downloaded to the phone. If you are installing a stock lollipop rom, flash the rom followed by the supersu package. If you are installing the marshmallow stock rom, flash in the order of rom, older version of supsersu, newer version of supersu. If you are installing a CM-based rom, just flash that.
The first boot can take a very long time. Be patient. Wait at least 10 minutes before you give up. Also, if you're installing a different version of android than the version that is currently on there, you'll need to wipe your data with a factory reset first. So if you need to back things up, I would recommend putting the stock lollipop on there first, backing everything up, and then installing whatever you want afterwards.

[How to Dual Recovery] Huawei PRA (prague) - Android 7

How to Dual Recovery] Huawei PRA (prague) - Android 7
Content removed. The dual recovery is too dangerous and can lead to bricks.
​

valerio32 said:
So if I wanted to do the root, can I receive all OTA updates? . And if OTA updates included an eRecovery update. Is it updated or bootloop?
Click to expand...
Click to collapse
Ota updates always go. If twrp is on the recovery1 partition, the update aborts during installation. If twrp is on the recovery2 (eRecovery) partition, it works fine. The eRecovery is always overwritten without checking. The recovery only after checking if a stock exists.

ChinHon said:
[How to Dual Recovery] Huawei PRA (prague) - Android 7​​
The firmware should be updated, a full version to be flashed, we need to install a flashable zip , other flash operations are on, or we want to install Linage OS.
Then we need a fully functional TWRP recovery.
Would not it be convenient if you do not always flash it, but simply "switch" could?
That's what we do in the future, because we are now aligning a dual recovery.
Thats is quite easy:
Requirements:
OEM and FRP unlocked
Huawei PRA
Preparation:
ADB set up and flash knowledge available.
We both flash recoveries in the correct order:
fastboot flash recovery recovery.img
fastboot flash recovery2 twrp.img
That never needed stock Recovery2 (eRecovery) is overwritten.
Now both recoveries are present on the device and can be called anytime.
In the stock we come as usual with key combination Volup + Power, in the TWRP same, but with USB connection. (PC or charger)
When OS updating, the Recovery2 is overwritten with the eRecovery and must
are then replaced with TWRP.
The advantages for the future
- Direct exchange of TWRP in stock and vice versa, without rebooting,
- during updates, no unrooting and no Factory Reset (automatically if necessary)
- for flash operations, or Wipes per stock, immediately switched to TWRP
- in normal operation that "thinks" EMUI "all original".
*****important*****
To Lineage OS installation:
factory reset in stock recovery
factory reset in TWRP
wipe: System and Data in TWRP
flash: Vendor in TWRP Terminal
flash: * Lineage * .zip in TWRP
now make full backup in TWRP
To install the Rescue Rom:
factory reset in stock recovery
factory reset in TWRP
wipe data in TWRP
restore rescue backup
now make full backup in TWRP
In the future, the TWRP recovery now works with all functions.
After some reboots, the following has been shown:
The datapartition is mountable in TWRP,
but is not reliably secured or restored.
Therefore, never delete the internal memory and data partition,
or a factory reset. I have had the experience that too
other partition backups will never be restored as they are
were created. A perfect restoring is not possible.
Please do not use TWRP for backup and restoring operations.
Use a factory reset only in stock recovery.
The current TWRP is very dangerous. See my notes in the root thread. I have the Dualrecovery with me always. But I can fix any brick quickly. The normal user but not.
​
Thanks to: Team Win Recovery Project
and Huawei Technologies Co., Ltd. 华为 技术 有限公司
NOTE: Despite careful preparation I can not guarantee that through the implementation of this Guidance does not create damage to the device or operating system, and therefore assume no liability for ensuing damage and malfunction of hardware and software! If you are still unsure, follow these steps: Only perform the procedure if any mentioned conditions (model number, Android version, etc.) apply to you or your device. Read the instructions carefully and completely up unfamiliar terms. check downloaded files for viruses. A backup of important settings and data make. The instructions do not perform if you do not know what you're doing.​
Click to expand...
Click to collapse
I've flashed TWRP recovery to the phone, replacing stock recovery. I didn't replaced erecovery. Then I made factory reset in TWRP. Now I have only a black screen with soft buttons in Android. Could you help me please, what do I do now? (Erecovery can't find any downloads to restore phone.)

paraNo said:
I've flashed TWRP recovery to the phone, replacing stock recovery. I didn't replaced erecovery. Then I made factory reset in TWRP. Now I have only a black screen with soft buttons in Android. Could you help me please, what do I do now? (Erecovery can't find any downloads to restore phone.)
Click to expand...
Click to collapse
You can try to flash twrp in recovery2 via adb, wipe in stock recovery and twrp, and restore the twrp backup.
Enviado desde mi PRA-LX1 mediante Tapatalk

paraNo said:
I've flashed TWRP recovery to the phone, replacing stock recovery. I didn't replaced erecovery. Then I made factory reset in TWRP. Now I have only a black screen with soft buttons in Android. Could you help me please, what do I do now? (Erecovery can't find any downloads to restore phone.)
Click to expand...
Click to collapse
All you need is here:
https://forum.xda-developers.com/p8...-to-root-huawei-p8-lite-2017-android-t3582179

ChinHon said:
All you need is here:
https://forum.xda-developers.com/p8...-to-root-huawei-p8-lite-2017-android-t3582179
Click to expand...
Click to collapse
Thanks to both of you!
I've flashed stock recovery, made factory reset, and phone is working again.
But I've lost some of the apps (mainly games from the original ROM, magazine unlock is stopped working, lost themes, wallpapers etc. :crying
I've tried to download the pre-rooted B182 ROM but the archive is broken. (Both the zip in Mediafire, and the rar in MEGA)
I have ROM version B172, but System update cannot find updates. Thats why I'm not sure, if I can use the rescue rom. Maybe It won't upgrade.

Create a backup for security and try the rescue rom. It won't hurt. In the future, use the huawei backup app from the system so that you don't lose your apps and settings again.

ChinHon said:
Create a backup for security and try the rescue rom. It won't hurt. In the future, use the huawei backup app from the system so that you don't lose your apps and settings again.
Click to expand...
Click to collapse
Thank you, I will try!
The apps, and things that I've lost was in the original ROM. I think, I can't save ROM apps with huawei backup. (And I thought, I can't lose anything from ROM )

Bootloop after twrp restore - twrp-3.2.3-1-payton.img

Summary:
1. Flash factory image onto phone successfully
2. Install twrp and make a backup
3. Restore backup after reboot and I'm stuck in a bootloop
I have a new fi Moto x4 running Android 8.1 that I'm attempting to set up. I've reset this phone a bunch of times so here is the standards process:
1. Flash factory firmware as shown in this thread:
https://forum.xda-developers.com/moto-x4/how-to/guide-how-to-flash-official-factory-t3808348
I'm using: PAYTON_FI_OPW28.46-13_subsidy-DEFAULT_regulatory-DEFAULT_CFC.xml.zip
2. After flashing, start up the phone and it works fine.
3. Reboot into the bootloader and boot to twrp using: fastboot boot twrp-3.2.3-1-payton.img
4. Copy in the twrp install file using: adb push twrp-installer-payton-3.2.3-1.zip /sdcard
5. Install the zip via the twrp Install function
6. Reboot the phone into the bootloader then start recovery
7. Use the twrp Backup function to create a backup of the Boot, Data and System partitions on Internal Storage (plenty of space).
8. Reboot the phone into the bootloader then start recover
9. Use the twrp Restore function to restore the backup. Finishes fine.
10. Reboot phone to system but the load won't finish. Phone just alternates between the Android One and the Motorola splash screens. Left it for an hour at one point just to be sure. No love.
Things I have tried:
1. Using twrp via fastboot boot and a hard install
2. Making backups to the internal and external memory cards
3. Changing the partitions in the backup
4. Wiping everything except the external sim card before performing a restore
If anyone has any thoughts I would love to here them.
Thank you!

I'm having a similar problem and found this old thread. I am on stock pie rooted and made a twrp backup this morning so that I could try flashing some custom ROMs. After successfully installing a custom ROM I attempted to restore the backup and return to stock but just get bootloop. I am able to get back to to twrp and the phone will boot after a factory reset, but even if I just restore data I get bootloop. I'm wondering what I am doing wrong with restoring the backup. Any thoughts? Thanks.

I have the same problem as you are. After I finished install all applications, I made a backup with twrp-3.2.3-1-payton. Then next day I restore it from the backup, after finished backup, it goes to bootloop forever. My version is OPWS28.46.21.12, I download stock rom OPW28.46-13 but afraid to flash this rom since it is the lower version might be break the phone if not backward compatible. Then I search the web and found your message and follow this side fund a higher version of the stock rom OPWS28.46-21-14. I download it and flash it. After flashing complete and boot up, it saying new OTA update available, I don't want to update the rom since I want my phone rom version is same as the stock rom I have downloaded into my PC just in case in the future I accidentally doing something wrong I can flash back the stock rom without worrying the backward compatibility problem.

t-bob said:
I'm having a similar problem and found this old thread. I am on stock pie rooted and made a twrp backup this morning so that I could try flashing some custom ROMs. After successfully installing a custom ROM I attempted to restore the backup and return to stock but just get bootloop. I am able to get back to to twrp and the phone will boot after a factory reset, but even if I just restore data I get bootloop. I'm wondering what I am doing wrong with restoring the backup. Any thoughts? Thanks.
Click to expand...
Click to collapse
I'm a bit slow on the response - but my first thought is manually flash stock rom over your restore without wiping data

I'm able flash the latest stock rom of FI_9.0_PPWS29.69-26-4 and reinstall twrp-3.2.3-1-payton. Then I restore data only that backup from previous rom, I get bootloop again after restore the data only from TWRP. The I reflash FI_9.0_PPWS29.69-26-4 again, install twrp and root it with Magisk. Restore data from cloud google drive automatically. And this time is successfully without bootloop.