[Q] Problem installing custom kernel on stock ROM

Reubster24 · May 21, 2014

Hi all. I just got a Verizon Htc One M7. I bought it used and it was already updated to 4.4.2 Kit kat and sense 5.5. I am new to rooting and unlocking and I am running into issues I am hoping someone can help me with. I successfully unlocked, rooted, and got S-off. A am trying to get a custom kernel on the phone so I can have tap to wake and swipe to wake. I installed TWRP recovery 2.7.0.0. Everything appears to be working I boot into bootloader mode and it say unlocked and s-off on top of the screen. I started recovery and it appears to be working fine. I created a backup and that works. So I tried 2 different kernels elementalx and elite lunar. Both appear to install fine but when I reboot the phone gets stuck in a boot loop on the HTC screen. I then have to go back into recovery and revert back to my saved backup. The phone will then boot up fine. Not sure if I'm doing something wrong or what. I am running the stock ROM. Any help will be greatly appreciated.

Reubster24 · May 22, 2014

Forgive and help a noop!!!!

No one knows? I also just noticed that on the bootloader screen there is no numbers after OS. Which would appear to mean i have no OS. But the phone boots and operates just fine. Any suggestions? Thinking I should get it back to factory and start over and flash the NuSenseSIX rom. If anyone could please help me out here it would be greatly appreciated!!!! I attached a picture of what my bootloader screen looks like.

SynisterWolf · May 22, 2014

Reubster24 said:
No one knows? I also just noticed that on the bootloader screen there is no numbers after OS. Which would appear to mean i have no OS. But the phone boots and operates just fine. Any suggestions? Thinking I should get it back to factory and start over and flash the NuSenseSIX rom. If anyone could please help me out here it would be greatly appreciated!!!! I attached a picture of what my bootloader screen looks like.

it's the rom you are on, if you go back to stock build you will see the OS-build number correctly displayed. if you are on a custom rom, and its not built correctly, it will not display properly.

you dont need to worry about it. all the info in hboot is for diagnostic purpose and wont effect you in any way.

Reubster24 · May 22, 2014

synisterwolf said:
it's the rom you are on, if you go back to stock build you will see the OS-build number correctly displayed. if you are on a custom rom, and its not built correctly, it will not display properly.

you dont need to worry about it. all the info in hboot is for diagnostic purpose and wont effect you in any way.

Ok I appreciate the response. I am still on the stock ROM. Just have it rooted, unlocked and s-off with twrp custom recovery installed. Any ideas as to why I'm not able to get it to boot after installing a custom kernel? Can I just try to flash the NuSenseSIX ROM in the phones current state or should I start over?

SynisterWolf · May 22, 2014

Reubster24 said:
Ok I appreciate the response. I am still on the stock ROM. Just have it rooted, unlocked and s-off with twrp custom recovery installed. Any ideas as to why I'm not able to get it to boot after installing a custom kernel? Can I just try to flash the NuSenseSIX ROM in the phones current state or should I start over?

if you would like to try NuSense i would make sure you have a good backup or do one before. you'll need to wipe system - data - cache - dalvik in twrp and then install the rom.

---------- Post added at 01:36 PM ---------- Previous post was at 01:29 PM ----------

After some discussion with fellow dev's, i think you havent flash the insecure boot.img that allows you to write to /system. this should stop the kernel bootlooping you.

ok, here we go.
Flash the attached zip in recovery.
wipe dalvik and cache (2x for good measure)
reboot the phone.

then try to flash a custom kernel and see if you boot loop. Let me know what happens. please have a working backup before trying any of this.

(credit to @buckmarble and @brymaster5000)

kernel source

Reubster24 · May 22, 2014

synisterwolf said:
if you would like to try NuSense i would make sure you have a good backup or do one before. you'll need to wipe system - data - cache - dalvik in twrp and then install the rom.

---------- Post added at 01:36 PM ---------- Previous post was at 01:29 PM ----------

After some discussion with fellow dev's, i think you havent flash the insecure boot.img that allows you to write to /system. this should stop the kernel bootlooping you.

I have everything backed up google drive with titanium backup as well as backed up in TWRP. When I wipe it doesn't remove the TWRP backup right? I have not flashed any boot.img. I am new to this and don't really know what that is. How would I find the boot.img I need. I think I'll just move forward with the NuSense Rom. Can I just download the zip for the NuSense ROM then wipe and flash it using TWRP and I'm good to go or is there other stuff I need to do?

SynisterWolf · May 22, 2014

Reubster24 said:
I have everything backed up google drive with titanium backup as well as backed up in TWRP. When I wipe it doesn't remove the TWRP backup right? I have not flashed any boot.img. I am new to this and don't really know what that is. How would I find the boot.img I need. I think I'll just move forward with the NuSense Rom. Can I just download the zip for the NuSense ROM then wipe and flash it using TWRP and I'm good to go or is there other stuff I need to do?

the boot.img zip above will allow you to write to the /system part of the phone.

TWRP will not wipe your backup. that is stored in a location its not allowed to wipe unless you do a "factory reset"

flash the zip above first. let it boot then flash NuSense. I'm not to familiar with that rom so i cant for sure say it will have said insecure boot.img.

Reubster24 · May 22, 2014

Ok I flashed that file and the phone boots up fine. But it has a weird N flashing at the top of the screen now. I'll try a kernel this evening and see what happens. Any idea what the N is? Attached a zipped video of what its doing.

SynisterWolf · May 22, 2014

Reubster24 said:
Ok I flashed that file and the phone boots up fine. But it has a weird N flashing at the top of the screen now. I'll try a kernel this evening and see what happens. Any idea what the N is? Attached a zipped video of what its doing.

That icon is for NFC. idk why its flashing but make sure its off if you dont use it.
its under settings.

Reubster24 · May 22, 2014

synisterwolf said:
That icon is for NFC. idk why its flashing but make sure its off if you dont use it.
its under settings.

Ok. It is off in settings. Tried to turn it on and it won't let me. I'll flash a kernel later and see what happens and if it stops doing it. Is there another insecure boot.img I can try?

SynisterWolf · May 22, 2014

Reubster24 said:
Ok. It is off in settings. Tried to turn it on and it won't let me. I'll flash a kernel later and see what happens and if it stops doing it. Is there another insecure boot.img I can try?

only need to do it once. flash any kernel that is meant for your rom or switch roms. you should be good to go.

Reubster24 · May 23, 2014

synisterwolf said:
only need to do it once. flash any kernel that is meant for your rom or switch roms. you should be good to go.

Awesome thanks for all your help. I think I'm gonna flash a Rom. Any suggestions? I would like something close to the stock Rom.

Reubster24 · May 23, 2014

Thank you for all your help!! I successfully installed the NuSense Rom.

SynisterWolf · May 23, 2014

Reubster24 said:
Thank you for all your help!! I successfully installed the NuSense Rom.

congrats man, you can PM me if you have anymore questions or post in the Q/A thread and i will try to help

:highfive:

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[Q] Problem installing custom kernel on stock ROM

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