Stuck on Boot Screen: Downgrading from Nougat to Marshmallow - Verizon HTC One (M8)

I was recently running a Nougat rom for the M8 and after some severe performance issues at time I wanted to try to revert back to a stock rom. I tried flashing both the stock marshmallow and the de-bloated roms but even after re-installing the Marshmallow firmware I get stuck on the boot screen. Can anyone help?

dkris2020 said:
I was recently running a Nougat rom for the M8 and after some severe performance issues at time I wanted to try to revert back to a stock rom. I tried flashing both the stock marshmallow and the de-bloated roms but even after re-installing the Marshmallow firmware I get stuck on the boot screen. Can anyone help?
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did you install just the mm firmware, or the full ruu? also, does flashing the N rom you tried to downgrade from boot up if you flash it?

I used the firmware, and yes flashing the N rom got me back in.

if you are flashing a mm rom, try also flashing a custom kernel for it afterwards. aosp kernel for aosp rom, sense for sense etc

Related

[Q] 4.4.4 OTA Update from 4.4.2 rooted and unlocked with Mods

Thank you guys in advance for your help but I just had a few questions. I am running 4.4.2 currently with the stock rom rooted and unlocked bootloader. I have however issued a few Mods such as extreme power saving and built in tether. Can I just load the 4.4.4 firmware and radios, switch back to stock recovery and take the OTA to 4.4.4 without having to wipe anything or since I have used some mods do I now have to wipe my device and put everything back after getting the 4.4.4 update. The reason I ask is I like having the stock features while just using google now launcher on top of sense. Also would any of you have a recommendation on a ROM to achieve this same thing so I dont have to go through this everytime I want to take the newest OTA if it is not possible to take without wiping.
jpgetter said:
Thank you guys in advance for your help but I just had a few questions. I am running 4.4.2 currently with the stock rom rooted and unlocked bootloader. I have however issued a few Mods such as extreme power saving and built in tether. Can I just load the 4.4.4 firmware and radios, switch back to stock recovery and take the OTA to 4.4.4 without having to wipe anything or since I have used some mods do I now have to wipe my device and put everything back after getting the 4.4.4 update. The reason I ask is I like having the stock features while just using google now launcher on top of sense. Also would any of you have a recommendation on a ROM to achieve this same thing so I dont have to go through this everytime I want to take the newest OTA if it is not possible to take without wiping.
Click to expand...
Click to collapse
Flash the ruu here. That will get you to 4.4.3 the easy way and make you 100% stock so you can take the ruu. Then flash twrp and flash su or the rooted Rom of your choosing.
The RUU is one way to go, although I would never update via OTA...
Another would be to flash the firmware and radios from here:
http://forum.xda-developers.com/showthread.php?t=2723159
And then Scott's rooted stock rom from here:
http://forum.xda-developers.com/showthread.php?t=2914922
He usually has them up a few hours after a new OTA has been released. Even better - try his stock, debloated CleanROM once it's out.
This way you can keep your recovery. You can even try to just flash the 4.4.4 firmware and radios and see if it runs your current 4.2 ROM ok. But I would not update the rom from version to version without a wipe.
The setup is the price to pay for getting a new and hopefully better Android version.

[Q] Can't boot custom rom after flashing in TWRP

I've never had issues barging into a development community and going out to the horizon of customization until this cellphone. It's been 12 hours of flashing and downloading and flushing and flashing...
I have S-off and unlocked through SunShine
I use the 0P6BIMG.zip to flash RUU back to the stock verizon rom android 4.4.2
I use 3.28.605.4-firmware.zip from the same RUU thread to update the firmware (???)
I want to install CM12 or liquidsmooth ROM, but I'm getting a hunch at this point I need to start with the stock verizon 5.0.1 installed before that because TWRP wants to patch the system file... But then why am I wiping my system before installing?
I also tried flashing FluentRom_v7.5.zip but I got stuck on the HTC initial screen, I don't even make it over to a boot animation.
What do?
Gevork Gevorkyan said:
I've never had issues barging into a development community and going out to the horizon of customization until this cellphone. It's been 12 hours of flashing and downloading and flushing and flashing...
I have S-off and unlocked through SunShine
I use the 0P6BIMG.zip to flash RUU back to the stock verizon rom android 4.4.2
I use 3.28.605.4-firmware.zip from the same RUU thread to update the firmware (???)
I want to install CM12 or liquidsmooth ROM, but I'm getting a hunch at this point I need to start with the stock verizon 5.0.1 installed before that because TWRP wants to patch the system file... But then why am I wiping my system before installing?
I also tried flashing FluentRom_v7.5.zip but I got stuck on the HTC initial screen, I don't even make it over to a boot animation.
What do?
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Click to collapse
I'm prettly sure you're on an older firmware. You need to be on 5.01 to flash the ROMs you have tried to flash. Use the pre-rooted RUU from this thread here: http://forum.xda-developers.com/ver...zw-m8-master-ruu-firmware-collection-t2946473
Also make sure you have the latest version of TWRP.
Edit: The firmware you flashed was 4.4.4
BladeRunner said:
I'm prettly sure you're on an older firmware. You need to be on 5.01 to flash the ROMs you have tried to flash. Use the pre-rooted RUU from this thread here: http://forum.xda-developers.com/ver...zw-m8-master-ruu-firmware-collection-t2946473
Also make sure you have the latest version of TWRP.
Edit: The firmware you flashed was 4.4.4
Click to expand...
Click to collapse
Thanks for the link that thread and your advice was exactly what I needed.
For whatever reason after using the app/exe to flash 5.0.1 stock-rooted, Liquid Rom failed to install in TWRP. I reflashed the stock-rooted rom and CM-12.1 worked flawlessly. So I'm on CM right now :good: but I'll take another look into Liquid rom. Thanks so much!
Since you like AOSP, I recommend visiting the main m8 thread some other Roms. They are unified builds.

[Q] OTA Updates to Stock ROM w/ Non-Stock Kernel and Recovery

Hey everyone,
So for the past couple of days I've been getting the notification that 5.1.1 has been downloaded and is ready to install, but I'm running a rooted stock ROM with CWM and ElementalX kernel, so I wasn't sure what would happen if I accepted the update. So my question to you all is just that; what will happen if I OTA update? I would imagine I'll lose root access and have to re-root, but would the OTA also flash a stock kernel and get rid of CWM? Or will the update create a load of problems since I'm not completely stock?
Thanks in advance for your help.
The OTA update will fail.
As of Lollipop, you have to have everything completely stock (including the recovery) to take an OTA update. You're better off just flashing another pre-rooted ROM or custom ROM which has been updated to 5.1.1.
Elluel said:
The OTA update will fail.
As of Lollipop, you have to have everything completely stock (including the recovery) to take an OTA update. You're better off just flashing another pre-rooted ROM or custom ROM which has been updated to 5.1.1.
Click to expand...
Click to collapse
Thanks for the help!

Custom Rom which one?

im running a stock firmware on samsung S6 SM-G920F after fixing a phone looping.
Currently its Andriod version 5.0.2 and Im unable to do an over the air upgrade which is fine.
Its rooted with kingRoot and has custom recovery TWRP which works.
Im unable to install xda-framework as this is a stock ROM.
Tried out a few ROMS but it keeps looping.
Are there any custom roms which work with 5.0.2 and allow the xda-framework to install?
Maybe there are 5.0.2 Roms but not much. I would Art least recommend to upgrade to 5.1.1 wenden you don't want 6.0.1. for 5.1.1 there are more Roms to find.

Noughat Custom Vs Official???

So i installed a custom noughat rom on my note 5. I can switch to marshmellow any time i want by twrp and my backed up marsellow rom..
But i am confused how is Flashing Android Noughat custom rom using TWRP diffrent from Flashing Noughat ROM using ODIN?
Is the diffrent just that noughat custom rom is running under marshmellow boot loader?
I am new to Android so please Explain
Am i losing any thing by not updating via OTA ???
o _ o
First off, you do not lose anything by updating through OTA except the convenience factor. The reason you can flash a Nougat ROM on your phone through twrp right now is because the Nougat ROM has a marshmellow baseband, just like your phone. Once the firmware comes out officially by Samsung and TMobile then you will need to Odin the firmware on your phone to be able to use Nougat ROMs with the nougat firmware.
SpencerA99 said:
First off, you do not lose anything by updating through OTA except the convenience factor. The reason you can flash a Nougat ROM on your phone through twrp right now is because the Nougat ROM has a marshmellow baseband, just like your phone. Once the firmware comes out officially by Samsung and TMobile then you will need to Odin the firmware on your phone to be able to use Nougat ROMs with the nougat firmware.
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I see i get it now.
I think i will stick with custom roms because i do not want to risk flashing odin.
odin
Cool Person said:
I see i get it now.
I think i will stick with custom roms because i do not want to risk flashing odin.
Click to expand...
Click to collapse
This is something to be familiar with if you flash custom roms and own a Samsung.

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