Stuck with stock kernel - Samsung Galaxy S7 Edge Questions and Answers

Hi
I have an issue with my s7 edge. I am unable to flash any kernel, even if it succeeds in twrp, the kernel remains stock regardless. Also, i think supersu has caused the issue as I am unable to root with magisk, it says that the boot image is already patched by an unsupported program. I literally have no idea how to get rid of this kernel. I have flashed to stock with odin and also tried a full unroot with supersu. Is anyone able to help?
Thanks

Just curious, can you flahlsh to stock, root with magisk and then flash a custom kernel in Twrp? Have you also tried a custom ROM? Good luck

In twrp , go to advance wipe and check all boxes except sd card. Wipe.
Flash whatever rom you want. Boot it up. Then go back into recovery flash a new kernel and it should work.
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Related

Restore LG US996 back to Stock

Hey does anyone know how to do this? I can't find any stock system or recovery images. I'm trying to make my device fully stock again (re-enabling encryption) so I can file a warranty claim. Would booting into fastboot and restoring using the LG Mobile Support Tool (http://www.lg.com/us/support/software-firmware-drivers) be all I need to restore back? Thanks!
darkghost568 said:
Hey does anyone know how to do this? I can't find any stock system or recovery images. I'm trying to make my device fully stock again (re-enabling encryption) so I can file a warranty claim. Would booting into fastboot and restoring using the LG Mobile Support Tool (http://www.lg.com/us/support/software-firmware-drivers) be all I need to restore back? Thanks!
Click to expand...
Click to collapse
The only way known so far to return to stock is to flash these IMG files in TWRP. As for re-enabling encryption that's something I have no idea of but these images system and boot should bring you back to stock. https://build.nethunter.com/misc/us996/v10d/?C=N&O=D by jcadduono
OneDon said:
The only way known so far to return to stock is to flash these IMG files in TWRP. As for re-enabling encryption that's something I have no idea of but these images system and boot should bring you back to stock. https://build.nethunter.com/misc/us996/v10d/?C=N&O=D by jcadduono
Click to expand...
Click to collapse
Thanks!
deleted
Did this work? I have a V20 US996 (unlocked, not US Cellular) that I'd like to return to stock, after something has corrupted somewhere, making it hard for me to flash kernels, su binaries, and the like. Isn't LGUP preferred at this point? Would flashing from TWRP bring it back to stock? I'd think that the custom recovery would still be intact when you're done. I can't seem to get LGUP to even start on my PC, let alone get it to recognize my phone.
DrPhant0m said:
Did this work? I have a V20 US996 (unlocked, not US Cellular) that I'd like to return to stock, after something has corrupted somewhere, making it hard for me to flash kernels, su binaries, and the like. Isn't LGUP preferred at this point? Would flashing from TWRP bring it back to stock? I'd think that the custom recovery would still be intact when you're done. I can't seem to get LGUP to even start on my PC, let alone get it to recognize my phone.
Click to expand...
Click to collapse
Going back to complete stock I would suggest using LG's tools. After flashing back to stock you can re-lock the bootloader which should clear the boot-up warning.
If you want to try and just recover from bad flashing, and you have access to TWRP, you can try to flash the zip from here: https://forum.xda-developers.com/v20/how-to/us996unlocked-twrp-flashable-10f-t3544573
That should bring you back to 100% stock, minus recovery, and then automatically install SuperSU. I'll most likely be adding a zip without the automatic installation of SuperSU so that users can have a choice on what SU they want to use.
McNutnut said:
Going back to complete stock I would suggest using LG's tools. After flashing back to stock you can re-lock the bootloader which should clear the boot-up warning.
If you want to try and just recover from bad flashing, and you have access to TWRP, you can try to flash the zip from here: https://forum.xda-developers.com/v20/how-to/us996unlocked-twrp-flashable-10f-t3544573
That should bring you back to 100% stock, minus recovery, and then automatically install SuperSU. I'll most likely be adding a zip without the automatic installation of SuperSU so that users can have a choice on what SU they want to use.
Click to expand...
Click to collapse
I'm actually trying to get MagiskSU working, so that I can be SafetyNet compliant for snapchat, androidpay, and concur (business expense app). I'd prefer to stay on the WETA rom for the extra tweaks. Lots of users post pics of MagiskSU working in WETA, but it seems they're all on other carriers with carrier-specific models. I'd think that the US996 would be EASIER to work with. Any suggestion? Thanks for the reply!
DrPhant0m said:
I'm actually trying to get MagiskSU working, so that I can be SafetyNet compliant for snapchat, androidpay, and concur (business expense app). I'd prefer to stay on the WETA rom for the extra tweaks. Lots of users post pics of MagiskSU working in WETA, but it seems they're all on other carriers with carrier-specific models. I'd think that the US996 would be EASIER to work with. Any suggestion? Thanks for the reply!
Click to expand...
Click to collapse
MagiskSU is actually the reason I want to upload the zip(s) without the automatic SuperSU. (Allow users to pick between SuperSU & MagiskSU). I started using Magisk so that I can bypass SafetyNet. Unfortunately I've only used the stock ROM so I don't have many tips for getting MagiskSU working on WETA. I assume it's pre-rooted with SuperSU so I would say performing a full un-root within the SuperSU app and then flashing the Magisk zip in recovery could get you up and running with Magisk. It's also worth nothing that I've only been successful with v11.6 of Magisk on the stock ROM. v12.0 causes an unstable system.
McNutnut said:
MagiskSU is actually the reason I want to upload the zip(s) without the automatic SuperSU. (Allow users to pick between SuperSU & MagiskSU). I started using Magisk so that I can bypass SafetyNet. Unfortunately I've only used the stock ROM so I don't have many tips for getting MagiskSU working on WETA. I assume it's pre-rooted with SuperSU so I would say performing a full un-root within the SuperSU app and then flashing the Magisk zip in recovery could get you up and running with Magisk. It's also worth nothing that I've only been successful with v11.6 of Magisk on the stock ROM. v12.0 causes an unstable system.
Click to expand...
Click to collapse
There is a v13 of Magisk that's out if you go to their git.
WETA has an AROMA installer, and you can choose to NOT install superSU. However, when I do that, the phone won't boot. It just sits there for 20min+ (flashing the rom with supersu takes about 5min to boot). The same non-booting issue used to happen when trying to update the binary, but I flashed something that fixed that. (I flashed so much stuff and something worked... I wish I knew which it was). However, SuperSU is like burned into my ramdisk or something, and it can't come out. When I tried to do the full unroot in SuperSU, it either fails, or the phone won't boot. But, there are options along that way that I don't know what to pick. Can you suggest what to do? Here... let me elaborate:
SuperSu v2.82 > "Full Unroot" > Continue (warning that some kernels auto-root. I'm on konverged... not sure if that's good or bad for this)
Attempt to Restore boot image? > YES
Attempt to restore stock recovery image? YES or NO?
.......YES "Uninstallation failed."
.......NO "Uninstallation failed."
Attempt to Restore boot image? > NO
Phone reboots within seconds... then sits and sits until I pull the battery.
....I then have to dirty-flash my ROM with superSU to get it to boot to the OS.
Helpful others with more knowledge than I have suggested that my problems are due to the latest version of TWRP corrupting ramdisk because of bad compression. Most of this is over my head when it comes to the actual development of recoveries, kernels, etc.
DrPhant0m said:
There is a v13 of Magisk that's out if you go to their git.
WETA has an AROMA installer, and you can choose to NOT install superSU. However, when I do that, the phone won't boot. It just sits there for 20min+ (flashing the rom with supersu takes about 5min to boot). The same non-booting issue used to happen when trying to update the binary, but I flashed something that fixed that. (I flashed so much stuff and something worked... I wish I knew which it was). However, SuperSU is like burned into my ramdisk or something, and it can't come out. When I tried to do the full unroot in SuperSU, it either fails, or the phone won't boot. But, there are options along that way that I don't know what to pick. Can you suggest what to do? Here... let me elaborate:
SuperSu v2.82 > "Full Unroot" > Continue (warning that some kernels auto-root. I'm on konverged... not sure if that's good or bad for this)
Attempt to Restore boot image? > YES
Attempt to restore stock recovery image? YES or NO?
.......YES "Uninstallation failed."
.......NO "Uninstallation failed."
Attempt to Restore boot image? > NO
Phone reboots within seconds... then sits and sits until I pull the battery.
....I then have to dirty-flash my ROM with superSU to get it to boot to the OS.
Helpful others with more knowledge than I have suggested that my problems are due to the latest version of TWRP corrupting ramdisk because of bad compression. Most of this is over my head when it comes to the actual development of recoveries, kernels, etc.
Click to expand...
Click to collapse
I doubt I'll try v13 unless there's a real reason for it (haven't looked at the changes yet). Since I'm stable on v11.6 I'm not too inclined to attempt to upgrade again (since v12 kept crashing the SystemUI).
Have you tried choosing not to install SuperSU in WETA and then flashing the Magisk zip right after completing the WETA install (before attempting to boot system)?
Another idea is to flash a stock boot image (since the one in WETA is modified slightly), flash WETA with kernel and SuperSU options turned off, and then flash Magisk.
McNutnut said:
I doubt I'll try v13 unless there's a real reason for it (haven't looked at the changes yet). Since I'm stable on v11.6 I'm not too inclined to attempt to upgrade again (since v12 kept crashing the SystemUI).
Have you tried choosing not to install SuperSU in WETA and then flashing the Magisk zip right after completing the WETA install (before attempting to boot system)?
Another idea is to flash a stock boot image (since the one in WETA is modified slightly), flash WETA with kernel and SuperSU options turned off, and then flash Magisk.
Click to expand...
Click to collapse
no luck. Unless I have the wrong boot.img (I was given one earlier in trying to troubleshoot).
I flashed a boot.img that was supposedly for my phone, then flashed WETA with no kernel, no SU. Then I flashed Magisk. It flashed... but the phone wouldn't boot.
I restored the boot partition from my initial TWRP backup and tried flashing WETA again... followed by Magisk. This time, Magisk failed to run because it said SuperSU was already patched (I made the TWRP backup after installing SuperSU) and it couldn't flash.
I tried flashing WETA with the kernel, but no SU... and then immediately following it with flashing Magisk, and it wouldn't boot.
I should probably start a new thread, or post in the WETA thread. I got a little off-topic here. I initially just wanted to see if there was any advice on returning to stock on my US996.
Thanks for the suggestions
DrPhant0m said:
no luck. Unless I have the wrong boot.img (I was given one earlier in trying to troubleshoot).
I flashed a boot.img that was supposedly for my phone, then flashed WETA with no kernel, no SU. Then I flashed Magisk. It flashed... but the phone wouldn't boot.
I restored the boot partition from my initial TWRP backup and tried flashing WETA again... followed by Magisk. This time, Magisk failed to run because it said SuperSU was already patched (I made the TWRP backup after installing SuperSU) and it couldn't flash.
I tried flashing WETA with the kernel, but no SU... and then immediately following it with flashing Magisk, and it wouldn't boot.
I should probably start a new thread, or post in the WETA thread. I got a little off-topic here. I initially just wanted to see if there was any advice on returning to stock on my US996.
Thanks for the suggestions
Click to expand...
Click to collapse
You're welcome! Sorry it didn't work. I do know it takes a few minutes for it to boot up the first time, but I imagine you waited pretty long. I have heard of phones taking 10-15 minutes to boot up after flashing.
I did add US99610h stock firmware to my thread at https://forum.xda-developers.com/v20/how-to/us996unlocked-twrp-flashable-10f-t3544573 if you want to return to the newest stock firmware of the US996.
I hope you are able to get Magisk installed as it's nice to get past SafetyNet. Good luck!

How can I remove Magisk?

I've flashed Magisk, but because I can't get Xposed to work, I'd like to remove Magisk and install SuperSU, but I don't know how. I tried to flash the uninstaller via TWRP and it says everything is fine, but after rebooting it just stays installed. If I try to flash SuperSU anyway I get stuck on boot. I have to flash stock boot.img via TWRP and then Magisk magically reappears. I tried using MiFlash but it refuses to do anything. It says no permission.
One possible solution, I guess, would be to flash stock ROM via TWRP. Can this be done? Any other ideas? Or am I just stuck with Magisk until a new version is available?
Filip013 said:
I've flashed Magisk, but because I can't get Xposed to work, I'd like to remove Magisk and install SuperSU, but I don't know how. I tried to flash the uninstaller via TWRP and it says everything is fine, but after rebooting it just stays installed. If I try to flash SuperSU anyway I get stuck on boot. I have to flash stock boot.img via TWRP and then Magisk magically reappears. I tried using MiFlash but it refuses to do anything. It says no permission.
One possible solution, I guess, would be to flash stock ROM via TWRP. Can this be done? Any other ideas? Or am I just stuck with Magisk until a new version is available?
Click to expand...
Click to collapse
Magisk is pretty much "useless" for now. Because it is based on system-less root, and cannot be updated (because still in testing phase! Newer Xposed module from Magisk requires latest Magisk root binary, which is pretty out of option atm as we can't update to the latest binary). The only solution if you want to have proper root access is:
1. Head over to Xiaomi MIUI website and download the full stock ROM again, and then flash it via fastboot (choose flash_all_except_storage.bat if you want to preserve your data).
2. Once flashed, reboot back to bootloader and unlock it.
3. While still in bootloader flash the correct CF-Auto root boot image for your ROM (contains SuperSU 2.82 binary, https://desktop.firmware.mobi/device:1748)
4. Wait patiently and it will automatically reboot. Install SuperSU from Play Store if you want root management app.
5. If you need Xposed, download the Xposed apk from XDA and then install it normally (not via recovery).
6. ??? Profit
*DO NOT INSTALL permanent TWRP as it will cause your phone stuck in boot loop.
@soralz
Thanks for your help, but no luck. I understand what I'm supposed to do, but I can't get MiFlash to work. When I try to flash stock image I get a "Permission Denied" error. (I have unlocked my bootloader successfully). I tried flashing modified stock image from here But then I couldn't boot. My only solution is to flash stock boot.img via TWRP and I can boot, but I stay stuck with Magisk.
So far, the only options I can think of is to wait for a recovery-flashable ROM, a new software update or a new version of Magisk.
Filip013 said:
@soralz
Thanks for your help, but no luck. I understand what I'm supposed to do, but I can't get MiFlash to work. When I try to flash stock image I get a "Permission Denied" error. (I have unlocked my bootloader successfully). I tried flashing modified stock image from here But then I couldn't boot. My only solution is to flash stock boot.img via TWRP and I can boot, but I stay stuck with Magisk.
So far, the only options I can think of is to wait for a recovery-flashable ROM, a new software update or a new version of Magisk.
Click to expand...
Click to collapse
You couldn't boot, are you using permanent TWRP?
Have you tried download the Full ROM from here and run this (as attachment)?
http://en.miui.com/download-333.html
Btw, place the folder under 1 directory only eg: as attachment. (I tried in multiple directory eg: "D:\Phones\ROM\Stock ROM", it just wouldn't flash)
@soralz
OMG!!! I can't believe it. MiFlash refused to let me flash because I tried to do that from the wrong location. Weird??!!
Good. I’ve managed to follow your instructions and success!! Just a minor note, I couldn't flash the modified boot.img directly via fastboot, it still won't let me. But I just booted TWRP (without flashing) and then flashed it from there. Again, THANK YOU!
BTW, yes, I had flashed permanent TWRP and then unsuccessfully tried to remove it.
Filip013 said:
@soralz
OMG!!! I can't believe it. MiFlash refused to let me flash because I tried to do that from the wrong location. Weird??!!
Good. I’ve managed to follow your instructions and success!! Just a minor note, I couldn't flash the modified boot.img directly via fastboot, it still won't let me. But I just booted TWRP (without flashing) and then flashed it from there. Again, THANK YOU!
BTW, yes, I had flashed permanent TWRP and then unsuccessfully tried to remove it.
Click to expand...
Click to collapse
Oh you manage to fix that? Good for you then. And yes you cannot have permanent TWRP and SuperSU at the same time. The CF-auto root for me I just click root.bat and done. btw side note, you will lose root after each update, besure to check out the new patched boot image. I m sure in the future we will have automated process, don't need to re-root manually after each update

Samsung Galaxy A3 (2016) Stock Boot Image

I have recently rooted my A3(2016) and have been using SuperSU, since i heard about Magisk i wanted to try and install it with TWRP but I have been getting error to restore Stock Boot Image. I've tried Fully Unrooting in SuperSU app but it says it can't restore Stock Boot Image. Is there anyway to acquire Stock boot image without flashing new firmware, since I don't want to lose data.
HisBrain said:
I have recently rooted my A3(2016) and have been using SuperSU, since i heard about Magisk i wanted to try and install it with TWRP but I have been getting error to restore Stock Boot Image. I've tried Fully Unrooting in SuperSU app but it says it can't restore Stock Boot Image. Is there anyway to acquire Stock boot image without flashing new firmware, since I don't want to lose data.
Click to expand...
Click to collapse
hi , extrat boot.img from your firmware and flash with twrp also magisk v14.0>>> reboot and wait .... good luck

Softbricked phone

I was trying to root my phone and I installed Supersu but than my phone refused to boot. It would open fastboot but nothing after that. I tried to revert to the stock image and i think i made it past that but, that did not fix anything i can still only boot into fastboot. Please help me I want to save my phone.
fireop958 said:
I was trying to root my phone and I installed Supersu but than my phone refused to boot. It would open fastboot but nothing after that. I tried to revert to the stock image and i think i made it past that but, that did not fix anything i can still only boot into fastboot. Please help me I want to save my phone.
Click to expand...
Click to collapse
SuperSU should have a uninstall file, try flashing that in twrp
Sent from my validus_athene using Tapatalk
fireop958 said:
I was trying to root my phone and I installed Supersu but than my phone refused to boot. It would open fastboot but nothing after that. I tried to revert to the stock image and i think i made it past that but, that did not fix anything i can still only boot into fastboot. Please help me I want to save my phone.[/Q
Flash a temporary rom and then install a stock recovery, and then boot back into stock rom by flashing stock image on pc
through fastboot mode
Click to expand...
Click to collapse
@fireop958
Installing SuperSU or any root app needs custom kernel installed, if you flash it on stock kernel then its anti-root mechanism will get activated and it will refuse to boot;
now first flash the stock rom via fast boot from here : https://forum.xda-developers.com/moto-g4-plus/how-to/stock-rom-npjs25-93-14-4-march-1-t3608138
then after its booted successfully, then flash the TWRP from fastboot and flash the ElimentalX kernel from TWRP, reboot and check the kernel info in about phone in settings; after then
simply flash SuperSU or magisk from TWRP to get root access
siddhesh9146 said:
@fireop958
Installing SuperSU or any root app needs custom kernel installed, if you flash it on stock kernel then its anti-root mechanism will get activated and it will refuse to boot;
now first flash the stock rom via fast boot from here : https://forum.xda-developers.com/moto-g4-plus/how-to/stock-rom-npjs25-93-14-4-march-1-t3608138
then after its booted successfully, then flash the TWRP from fastboot and flash the ElimentalX kernel from TWRP, reboot and check the kernel info in about phone in settings; after then
simply flash SuperSU or magisk from TWRP to get root access
Click to expand...
Click to collapse
Thank you so much. You saved my life right there.

rooting shield

So i recently installed developer image 8.0 on my 2017 16gb shield, now i want to install twrp and then flash the kernel to increase cpu and gpu clock and mainly full fan control, i have read that there is no root available but with dev image which is already rooted is it safe to install twrp and the kernel and how do i do it, thank you.
https://forum.xda-developers.com/shield-tv/development/kernel-overclock-kernel-2-22-ghz-t3943079
There is root available, works with both the developer image but also the stock ota.
All the kernel's/modified boots there comes with magisk root.
If you have no idea how to do it, I wouldn't suggest you start doing it.
But there a plenty of guides here on the forum on how to root, flash images and boot into twrp.
I guess my question is as the dev edition is already rooted do i need to install magisk or just flash the kernel which is what i wanted to begin with. So just to twrp temporarily and then flash kernel but not install twrp, i am not entirely sure.
lingarajug said:
I guess my question is as the dev edition is already rooted do i need to install magisk or just flash the kernel which is what i wanted to begin with. So just to twrp temporarily and then flash kernel but not install twrp, i am not entirely sure.
Click to expand...
Click to collapse
You can boot into twrp from fastboot.
"fastboot boot twrp.img"
Magisk is included in the kernel, so if you flash the kernel, magisk will also be installed.
I understood that part, so do i have to flash twrp after flashing kernel with temporary twrp or just leave as it is with stock recovery for it to work.
lingarajug said:
I understood that part, so do i have to flash twrp after flashing kernel with temporary twrp or just leave as it is with stock recovery for it to work.
Click to expand...
Click to collapse
I would suggest just leaving the stock recovery there.
I tried flashing twrp and ended with a bootloop, so now I just boot into twrp instead.

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