Database Develop

Switching from SuperSU to MagiskSU

Dear all,
I currently use the Minotaurus S8 Port V11.0 (pre-rooted ROM) on a Samsung S7 Edge.
During the installation I chose SuperSU.
Now I'd like to switch to MagiskSU - if possible without flashing the complete ROM one again.
Nevertheless my efforts currently are not successful.
I read that I have to unroot first what I did with using osm0sis unSU. This worked and root was gone.
Trying then to install Magisk (v12) ended up with an error:
****************************************
Magisk v12.0 Boot Image Patcher
****************************************
- Mounting /system(ro), /cache, /data
- Device platform: arm64
- Constructing environment
- /data/magisk.img detected!
- Found Boot Image: /dev/block/sda5
- Unpacking boot image
- Checking patch status
- SuperSU patched boot detected!
- Adding ramdisk patch script for SuperSU
- We are using SuperSU's own tools, mounting su.img
! SuperSU image mount failed...
! Magisk scripts are placed correctly
! Flash SuperSU immediately to finish installation
Updater process ended with ERROR: 1
Error installing zip file '/external_sd/S7E Minotaurus/Magisk/Magisk-v12.0.zip'
Updating partition details...
...done
Then I installed SuperSU v2.82 again which brought back root (with SuperSU).
I tried to flash Magisk v13.0 (96f8efc) but again end up in an error:
****************************************
Magisk v13.0 (96f8efc) Installer
****************************************
- Mounting /system(ro), /cache, /data
- Device platform: arm64
- Constructing environment
- /data/magisk.img detected!
- Mounting /data/magisk.img to /magisk
- Found Boot Image: /dev/block/sda5
- Unpacking boot image
- Checking ramdisk status
! Boot image patched by other programs!
! please restore stock boot image
Updater process ended with ERROR: 1
Error installing zip file '/external_sd/S7E Minotaurus/Magisk/Magisk-v13.0(96f8efc).zip'
Updating partition details...
...done
Is anybody able to help me and give me some guidance to get MagiskSU (with v13.0)
Thank you in advance,
Best regards,
MarkusTh

Besides flashing the unSU script you'll need to also flash a boot image without the SuperSU patches. That's gonna be an issue on a pre-rooted ROM. You say you chose SuperSU during installation? Did you have any other options (Magisk or no root)? If so, reinstall the ROM and make a different choice.

Didgeridoohan said:
Besides flashing the unSU script you'll need to also flash a boot image without the SuperSU patches. That's gonna be an issue on a pre-rooted ROM. You say you chose SuperSU during installation? Did you have any other options (Magisk or no root)? If so, reinstall the ROM and make a different choice.
Click to expand...
Click to collapse
Thanks for the quick answer.
Yes, the other options mentioned by you are available.
Is it possible to do a "dirty" flash over the current ROM without having to reinstall everything again afterwards ?
If yes, I assume the steps would be:
1) "dirty" flash of original ROM with choosing "MagiskSU" or "no root"
2) reboot necessary ?
3) flashing Magisk v13
4) reboot and ready ?
That easy ?
Thx,
MarkusTh

Or extract the kernel from your ROM.zip and flash it in TWRP.
Nothing in your current ROM will change.
So...
1.) unsu.zip
2.) Flash unpatched kernel (just go to "Install" in TWRP and choose in the bottom right "Select Image" > Select you boot.img and choose "boot" as partition in the next screen)
3.) Flash Magisk Beta v13
4.) Reboot
That's how I did it on my HTC 10.

Maik268 said:
Or extract the kernel from your ROM.zip and flash it in TWRP.
Nothing in your current ROM will change.
So...
1.) unsu.zip
2.) Flash unpatched kernel (just go to "Install" in TWRP and choose in the bottom right "Select Image" > Select you boot.img and choose "boot" as partition in the next screen)
3.) Flash Magisk Beta v13
4.) Reboot
That's how I did it on my HTC 10.
Click to expand...
Click to collapse
Thanks so much for this!! I would have been in a mess without this method which worked perfectly on my Samsung GS6. Thanks.

MarkusTh said:
Dear all,
I currently use the Minotaurus S8 Port V11.0 (pre-rooted ROM) on a Samsung S7 Edge.
During the installation I chose SuperSU.
Now I'd like to switch to MagiskSU - if possible without flashing the complete ROM one again.
Nevertheless my efforts currently are not successful.
I read that I have to unroot first what I did with using osm0sis unSU. This worked and root was gone.
Trying then to install Magisk (v12) ended up with an error:
****************************************
Magisk v12.0 Boot Image Patcher
****************************************
- Mounting /system(ro), /cache, /data
- Device platform: arm64
- Constructing environment
- /data/magisk.img detected!
- Found Boot Image: /dev/block/sda5
- Unpacking boot image
- Checking patch status
- SuperSU patched boot detected!
- Adding ramdisk patch script for SuperSU
- We are using SuperSU's own tools, mounting su.img
! SuperSU image mount failed...
! Magisk scripts are placed correctly
! Flash SuperSU immediately to finish installation
Updater process ended with ERROR: 1
Error installing zip file '/external_sd/S7E Minotaurus/Magisk/Magisk-v12.0.zip'
Updating partition details...
...done
Then I installed SuperSU v2.82 again which brought back root (with SuperSU).
I tried to flash Magisk v13.0 (96f8efc) but again end up in an error:
****************************************
Magisk v13.0 (96f8efc) Installer
****************************************
- Mounting /system(ro), /cache, /data
- Device platform: arm64
- Constructing environment
- /data/magisk.img detected!
- Mounting /data/magisk.img to /magisk
- Found Boot Image: /dev/block/sda5
- Unpacking boot image
- Checking ramdisk status
! Boot image patched by other programs!
! please restore stock boot image
Updater process ended with ERROR: 1
Error installing zip file '/external_sd/S7E Minotaurus/Magisk/Magisk-v13.0(96f8efc).zip'
Updating partition details...
...done
Is anybody able to help me and give me some guidance to get MagiskSU (with v13.0)
Thank you in advance,
Best regards,
MarkusTh
Click to expand...
Click to collapse
Mate, just unroot from supersu as you did earlier, then copy original boot image to internal memory, boot into TWRP, flash original boot image and then flash Magisk. It should work now.

atf2m4 said:
Mate, just unroot from supersu as you did earlier, then copy original boot image to internal memory, boot into TWRP, flash original boot image and then flash Magisk. It should work now.
Click to expand...
Click to collapse
I got the same issue and I tried to fix that but I don't know where the original boot image is located respectively where can I get the orginal boot image back? Could you help me out with my Samsung S8?
Thanks a bunch!

cocolish said:
I got the same issue and I tried to fix that but I don't know where the original boot image is located respectively where can I get the orginal boot image back? Could you help me out with my Samsung S8?
Thanks a bunch!
Click to expand...
Click to collapse
SOLVED! I managed to extract the boot.img from the original Samsung firmware and flashed the original boot.img via TWRP!

Maik268 said:
Or extract the kernel from your ROM.zip and flash it in TWRP.
Nothing in your current ROM will change.
So...
1.) unsu.zip
2.) Flash unpatched kernel (just go to "Install" in TWRP and choose in the bottom right "Select Image" > Select you boot.img and choose "boot" as partition in the next screen)
3.) Flash Magisk Beta v13
4.) Reboot
That's how I did it on my HTC 10.
Click to expand...
Click to collapse
Im having a similar problem. i have an lgms550. my problem is when i flash the stock boot img, magisk still states unable to mount. im not sure whats wrong here

So, I got a Huawei P9 (L09) and want to UnSU as well to install Magisk.
I once took apart an update file and therefore also have a boot.img from this package.
Is this file the one I would need to restore my boot partition on this phone?
If so, then I got super lucky here.

I am on J7 Prime (SM-G610F) the issue is I'm on the stock Nougat ROM which comes in a .tar.md5 format which I don't know how to disassemble.

The .md5 files are in fact .TAR files with the MD5 sum appended at the end.
If you rename each .md5 to a .tar file, they can be unpacked with 7zip or Winrar.

Can someone please please help me. I have j7 prime with supersu & trying to move on magisk but it says boot image is patched by another program. I'm soo tired with this issue please help me.

MarkusTh said:
Dear all,
I currently use the Minotaurus S8 Port V11.0 (pre-rooted ROM) on a Samsung S7 Edge.
During the installation I chose SuperSU.
Now I'd like to switch to MagiskSU - if possible without flashing the complete ROM one again.
Nevertheless my efforts currently are not successful.
I read that I have to unroot first what I did with using osm0sis unSU. This worked and root was gone.
Trying then to install Magisk (v12) ended up with an error:
****************************************
Magisk v12.0 Boot Image Patcher
****************************************
- Mounting /system(ro), /cache, /data
- Device platform: arm64
- Constructing environment
- /data/magisk.img detected!
- Found Boot Image: /dev/block/sda5
- Unpacking boot image
- Checking patch status
- SuperSU patched boot detected!
- Adding ramdisk patch script for SuperSU
- We are using SuperSU's own tools, mounting su.img
! SuperSU image mount failed...
! Magisk scripts are placed correctly
! Flash SuperSU immediately to finish installation
Updater process ended with ERROR: 1
Error installing zip file '/external_sd/S7E Minotaurus/Magisk/Magisk-v12.0.zip'
Updating partition details...
...done
Then I installed SuperSU v2.82 again which brought back root (with SuperSU).
I tried to flash Magisk v13.0 (96f8efc) but again end up in an error:
****************************************
Magisk v13.0 (96f8efc) Installer
****************************************
- Mounting /system(ro), /cache, /data
- Device platform: arm64
- Constructing environment
- /data/magisk.img detected!
- Mounting /data/magisk.img to /magisk
- Found Boot Image: /dev/block/sda5
- Unpacking boot image
- Checking ramdisk status
! Boot image patched by other programs!
! please restore stock boot image
Updater process ended with ERROR: 1
Error installing zip file '/external_sd/S7E Minotaurus/Magisk/Magisk-v13.0(96f8efc).zip'
Updating partition details...
...done
Is anybody able to help me and give me some guidance to get MagiskSU (with v13.0)
Thank you in advance,
Best regards,
MarkusTh
Click to expand...
Click to collapse
I can't find mt boot.img file
And unsu.zip is not unrooting my phone
And unroot failed saying in supersu
Please help????
And magisk 14.0 is not flashing saying error 1
Same as described
---------- Post added at 07:37 PM ---------- Previous post was at 06:39 PM ----------
Maik268 said:
Or extract the kernel from your ROM.zip and flash it in TWRP.
Nothing in your current ROM will change.
So...
1.) unsu.zip
2.) Flash unpatched kernel (just go to "Install" in TWRP and choose in the bottom right "Select Image" > Select you boot.img and choose "boot" as partition in the next screen)
3.) Flash Magisk Beta v13
4.) Reboot
That's how I did it on my HTC 10.
Click to expand...
Click to collapse
I did bit nothing happens
Showing my device is rooted even after uninstalling supersu
I can't flash magisk
First of all I've no boot.img file in my phone

brdude said:
I can't find mt boot.img file
And unsu.zip is not unrooting my phone
And unroot failed saying in supersu
Please help????
And magisk 14.0 is not flashing saying error 1
Same as described
---------- Post added at 07:37 PM ---------- Previous post was at 06:39 PM ----------
I did bit nothing happens
Showing my device is rooted even after uninstalling supersu
I can't flash magisk
First of all I've no boot.img file in my phone
Click to expand...
Click to collapse
The boot image you can extract from your device's factory image/firmware/ROM.
One of the best ways to unroot is to flash the unSU zip and then restore the stock boot image. That should be it.
If it doesn't work, provide logs (recovery log from flashing) and more details about your setup.

What is recovery log????
I have only copy log in my twrp recovery
And i tried copy log still saying boot image patched by other program
---------- Post added at 09:23 PM ---------- Previous post was at 09:12 PM ----------
I tried recently that unsu.zip
But still showing root is properly installed

brdude said:
What is recovery log????
I have only copy log in my twrp recovery
And i tried copy log still saying boot image patched by other program
---------- Post added at 09:23 PM ---------- Previous post was at 09:12 PM ----------
I tried recently that unsu.zip
But still showing root is properly installed
Click to expand...
Click to collapse
That is the recovery log.
Save the log after flashing the unSU zip and upload it. Or, just wipe and clean flash your device. Sounds like it might be easier... There are so many questions raised from your posts, but so few answers...
I'd suggest to go over to your device's forum and read up on the basics.

I have uninstalled SuperSU by flashing unsu.zip .
But when i tried to install magisk,it is failed showing this message "Boot image patched by other program,please restore stock boot image "
What to do??

madhuresh11 said:
I have uninstalled SuperSU by flashing unsu.zip .
But when i tried to install magisk,it is failed showing this message "Boot image patched by other program,please restore stock boot image "
What to do??
Click to expand...
Click to collapse
You do what the message says (the unSU zip doesn't restore the stock boot image for you)...
You'll find some pointers here:
https://forum.xda-developers.com/apps/magisk/guide-magisk-troubleshooting-t3641417

Didgeridoohan said:
You do what the message says (the unSU zip doesn't restore the stock boot image for you)...
You'll find some pointers here:
https://forum.xda-developers.com/apps/magisk/guide-magisk-troubleshooting-t3641417
Click to expand...
Click to collapse
Thanks. It worked!!

I can't install Magisk v14

after reformatting my device and flashing stock rom through twrp, i went and download the zip file with magisk manager latest version and then i fully unroot my device with full unroot of supersu. after i rebooted to twrp, i installed magisk v14 zip and this is what it tells me after i flashed it.
Installing '/sdcard/Magisk-v14.0.zip...
Checking for MD5 file...
Skipping MD5 check: no MD5 file found
************************
* Magisk v14.0 Installer
************************
- Mounting /system, /vendor, /cache, /data
- Device platform: arm
- Constructing environment
! Unable to detect boot image
- Unmounting partitions
E: Error executing updater binary in zip ' /sdcard/Magisk-v14.0.zip'
Error flashing zip ' /sdcard/Magisk-v14.0.zip'
Updating partition details...
...done
i have few questions.
1. unable to detect boot image. what do you mean by that? where can i get this boot image?
2. what's that updater binary in the zip file?
what can i do to be able to use magisk? thank you in advance
my device is oppo neo 7 android 5.1

The boot image is a part of your device's software. It's what Magisk modifies to do it's thing. If the installer can't recognise it, there's not much you can do... Except providing logs, that is.
The update binary is a part of the installer. It's the script that modifies the boot image to install Magisk on your device.
When you have these kind of errors, save the recovery log after flashing the zip (Advanced -> Copy Log) and post that (attach it or use Pastebin or similar, don't copy it directly to the post). It's so much easier to troubleshoot with proper logs.
First thing you can try is to use the latest beta and see if that works.

Didgeridoohan said:
The boot image is a part of your device's software. It's what Magisk modifies to do it's thing. If the installer can't recognise it, there's not much you can do... Except providing logs, that is.
The update binary is a part of the installer. It's the script that modifies the boot image to install Magisk on your device.
When you have these kind of errors, save the recovery log after flashing the zip (Advanced -> Copy Log) and post that (attach it or use Pastebin or similar, don't copy it directly to the post). It's so much easier to troubleshoot with proper logs.
First thing you can try is to use the latest beta and see if that works.
Click to expand...
Click to collapse
i got the log, how do i upload it here? im only using android browser.
so itried to install magisk v14 and it didnt detect bootimg but v14.5 did detect but still failed to install.

rajoholic said:
i got the log, how do i upload it here? im only using android browser.
so itried to install magisk v14 and it didnt detect bootimg but v14.5 did detect but still failed to install.
Click to expand...
Click to collapse
I guess you can't attach a file, being so new... You can upload it somewhere and provide the link or use Pastebin and provide the link/id for it.

Didgeridoohan said:
I guess you can't attach a file, being so new... You can upload it somewhere and provide the link or use Pastebin and provide the link/id for it.
Click to expand...
Click to collapse
https://dropmb.com/download/aca1616df3f0d913cb70d1f88176d9d4.html
here it is. thanks for the help

I m also facing same problem
rajoholic said:
after reformatting my device and flashing stock rom through twrp, i went and download the zip file with magisk manager latest version and then i fully unroot my device with full unroot of supersu. after i rebooted to twrp, i installed magisk v14 zip and this is what it tells me after i flashed it.
Installing '/sdcard/Magisk-v14.0.zip...
Checking for MD5 file...
Skipping MD5 check: no MD5 file found
************************
* Magisk v14.0 Installer
************************
- Mounting /system, /vendor, /cache, /data
- Device platform: arm
- Constructing environment
! Unable to detect boot image
- Unmounting partitions
E: Error executing updater binary in zip ' /sdcard/Magisk-v14.0.zip'
Error flashing zip ' /sdcard/Magisk-v14.0.zip'
Updating partition details...
...done
i have few questions.
1. unable to detect boot image. what do you mean by that? where can i get this boot image?
2. what's that updater binary in the zip file?
what can i do to be able to use magisk? thank you in advance
my device is Micromax canvas nitro a310 current android version is cyanogen mode 13
Click to expand...
Click to collapse

rajoholic said:
https://dropmb.com/download/aca1616df3f0d913cb70d1f88176d9d4.html
here it is. thanks for the help
Click to expand...
Click to collapse
That was a bit of a shady file sharing site. Anyway...
Your installed TWRP is pretty old. That might have something to do about it. Update TWRP, or you could try letting the Magisk Manager patch the boot image and then flash the patched image with TWRP. Installation instructions in the release thread.

Didgeridoohan said:
That was a bit of a shady file sharing site. Anyway...
Your installed TWRP is pretty old. That might have something to do about it. Update TWRP, or you could try letting the Magisk Manager patch the boot image and then flash the patched image with TWRP. Installation instructions in the release thread.
Click to expand...
Click to collapse
sorry bout that. i just search the google free and temporary storage online. haha! thank you for the help. I'll try what u just said

Didgeridoohan said:
That was a bit of a shady file sharing site. Anyway...
Your installed TWRP is pretty old. That might have something to do about it. Update TWRP, or you could try letting the Magisk Manager patch the boot image and then flash the patched image with TWRP. Installation instructions in the release thread.
Click to expand...
Click to collapse
how do i flash the patched boot.img with twrp? i cant find it in my sd card. it's not showing up. i already got the patched boot img

rajoholic said:
how do i flash the patched boot.img with twrp? i cant find it in my sd card. it's not showing up. i already got the patched boot img
Click to expand...
Click to collapse
Hm.... It might be that your TWRP is to old, but it should be the same procedure as when flashing a zip file except you switch to image flashing by pressing the "Image" button after going to the "Install" screen.
If that doesn't work, use fastboot (or whatever is available for your device).
Code:
fastboot flash boot patched_boot.img

Didgeridoohan said:
Hm.... It might be that your TWRP is to old, but it should be the same procedure as when flashing a zip file except you switch to image flashing by pressing the "Image" button after going to the "Install" screen.
If that doesn't work, use fastboot (or whatever is available for your device).
Code:
fastboot flash boot patched_boot.img
Click to expand...
Click to collapse
So I did what u told me and flashed the boot.img succesfully. Now after flashing that, I flashed v14 and still error in executing update binary. Same with 14.5. But this time after I saw that, I rebooted my device and found magisk manager on my phone. It says v14 installed. Is it installed already?

rajoholic said:
So I did what u told me and flashed the boot.img succesfully. Now after flashing that, I flashed v14 and still error in executing update binary. Same with 14.5. But this time after I saw that, I rebooted my device and found magisk manager on my phone. It says v14 installed. Is it installed already?
Click to expand...
Click to collapse
Yes, if you flash the patched boot image you don't have to do anything else. The Magisk Manager has already taken care of everything.
If you want v14.5 beta, you should now be able to change the update channel (in Manager settings) to beta and update. Just as a FYI, you could have done this already when patching the boot image.
Sounds like it's working now, or? Can you install modules?

Didgeridoohan said:
Yes, if you flash the patched boot image you don't have to do anything else. The Magisk Manager has already taken care of everything.
If you want v14.5 beta, you should now be able to change the update channel (in Manager settings) to beta and update. Just as a FYI, you could have done this already when patching the boot image.
Sounds like it's working now, or? Can you install modules?
Click to expand...
Click to collapse
I installed an app and gave it root permission. It looks like it's working. However the module part, I'm still unsure. When I try to add modules, the screen took me in storage. Looks like it requires me to import something? Where can I download modules?

rajoholic said:
I installed an app and gave it root permission. It looks like it's working. However the module part, I'm still unsure. When I try to add modules, the screen took me in storage. Looks like it requires me to import something? Where can I download modules?
Click to expand...
Click to collapse
First of all, don't even mention that piece of piracy software on xda. It's used to steal from developers and is not allowed here.
In the "Modules" part you can manually install modules that you've previously downloaded. If you want to install directly from the Magisk repo, you (unsurprisingly ) go to the "Downloads" section of the Manager. If you can't see "Downloads", make sure the Manager has internet access.

Didgeridoohan said:
First of all, don't even mention that piece of piracy software on xda. It's used to steal from developers and is not allowed here.
In the "Modules" part you can manually install modules that you've previously downloaded. If you want to install directly from the Magisk repo, you (unsurprisingly ) go to the "Downloads" section of the Manager. If you can't see "Downloads", make sure the Manager has internet access.
Click to expand...
Click to collapse
Sorry I didn't know. What I had in mind is that I'll give u all the details without leaving none so u know what I do and be able to help fast. Anyway, again I'm sorry. I didn't mean it.
I tried to dl greenify4magisk and I successfully download and install it. Rebooting the device now

rajoholic said:
Sorry I didn't know. What I had in mind is that I'll give u all the details without leaving none so u know what I do and be able to help fast. Anyway, again I'm sorry. I didn't mean it.
I tried to dl greenify4magisk and I successfully download and install it. Rebooting the device now
Click to expand...
Click to collapse
Sir, did you manage to install? when i tried to install log is failed.

Error installing zip file '/sdcard/MAGISK/Magisk-v16.0.zip'

Good evening from Spain.
I tried to flash Magisk onto my SM-J530F (Samsung Galaxy J5 2017) but not successfully.
Here's the log:
Updating partition details...
...done
Full SELinux support is present.
MTP Enabled.
Installing zip file '/sdcard/MAGISK/Magisk-v16.0.zip'
Checking for Digest file...
Skipping Digest check: no Digest file found
********************
* Magisk v16.0 Installer
********************
- Mounting /system, /vendor
- Found boot/ramdisk image: /dev/block/mmcblk0p10
- Device platform: arm
- Constructing environment
- Unpacking boot image
- Checking ramdisk status
! Boot image patched by other programs.
! Please restore stock boot image
- Unmounting partitions
Updater process ended with ERROR: 1
Error installing zip file '/sdcard/MAGISK/Magisk-v16.0.zip'
Updating partition details...
Failed to mount '/system' (Device or resource busy)
...done
Consider that I did the following:
- Flashed stock rom (J530FXXU2ARB3_J530FPHE2ARB3_PHE.zip content)
- Flashed "CF-Auto-Root-j5y17lte-j5y17ltexx-smj530f.tar" in Download mode via Odin, to root and install SuperSU, since it's needed
for flashing TWRP to avoid any bootloop.
- Flashed TWRP.
- Since I already have TWRP, I tried to uninstall SuperSU from the very app, in Options > Full unroot but gave "Uninstallation error", so then I tried to uninstall SuperSU by flashing "UPDATE-unSU.zip" on TWRP.
- Once that is done, I tried to flash "Magisk-v16.0.zip" and it throwed the log I've above mentioned.
- Since it says: "! Boot image patched by other programs.
! Please restore stock boot image", I rebooted it onto Download Mode, and flashed ONLY the BL (bootloader/boot) slot. Came back to TWRP, I flashed again "Magisk-v16.0.zip" but still have the same problem.
Hope there's any solution to install Magisk onto my SM-J530F. Thank you.

Your issue is that the boot image still is patched by SuperSU. Until you restore the stock boot image you won't be able to install Magisk.
https://www.didgeridoohan.com/magisk/Magisk#hn_Boot_image_patched_by_other_programs
Edit: I don't do Samsung, but from what I remember, you might need to flash AP (or something like that).

Didgeridoohan said:
Your issue is that the boot image still is patched by SuperSU. Until you restore the stock boot image you won't be able to install Magisk.
https://www.didgeridoohan.com/magisk/Magisk#hn_Boot_image_patched_by_other_programs
Edit: I don't do Samsung, but from what I remember, you might need to flash AP (or something like that).
Click to expand...
Click to collapse
Well, something changed!!!
The problem related with the boot image is solved but I still have the " Failed to mount '/system' "
Updating partition details...
...done
Full SELinux support is present.
MTP Enabled.
Installing zip file '/sdcard/MAGISK/Magisk-v16.0.zip'
Checking for Digest file...
Skipping Digest check: no Digest file found
********************
* Magisk v16.0 Installer
********************
- Mounting /system, /vendor
- Found boot/ramdisk image: /dev/block/mmcblk0p10
- Device platform: arm
- Constructing environment
- Unpacking boot image
- Checking ramdisk status
- Stock boot image detected
- Backing up stock boot image
- Patching ramdisk
- Repacking boot image
- Flashing new boot image
- Unmounting partitions
- Done
Updating partition details...
Failed to mount '/system' (Device or resource busy)
...done
Thank you very much.
EDIT: Despite this problem: "Failed to mount '/system' (Device or resource busy)", your solution was correct! Now I have Magisk correctly installed.
Thank you

Nice to hear it worked. Just for the record, the "Failed to mount /system" message is a TWRP thingy. The Magisk installation is done at the "-Done" line.

Hi, I have the same problem of error 1 while trying to install Magisk from TWRP.
I looked everywere and they say that it is related to a boot image that have to be reinstalled. I did that and no luck, I tryed with boot.img, no working, I even restored ALL the ROM Stock from Samsung ( AP, BL, CP and CSC) and it is not working. I dont know what to do anyware...
Regeet the time was easy to root Samsung with CF autoRoot,
I tried that and ask me to restore all thephone, so still no root??
Some can help please??
Thx

saoudien07 said:
Hi, I have the same problem of error 1 while trying to install Magisk from TWRP.
I looked everywere and they say that it is related to a boot image that have to be reinstalled. I did that and no luck, I tryed with boot.img, no working, I even restored ALL the ROM Stock from Samsung ( AP, BL, CP and CSC) and it is not working. I dont know what to do anyware...
Regeet the time was easy to root Samsung with CF autoRoot,
I tried that and ask me to restore all thephone, so still no root??
Some can help please??
Thx
Click to expand...
Click to collapse
Provide a recovery log or it's going to be impossible to say what the issue is...

Didgeridoohan said:
Provide a recovery log or it's going to be impossible to say what the issue is...
Click to expand...
Click to collapse
Thx for the reply, I am trying to open the content and upload the report here, but no luck. how can I open the log??? can not get a program to do so .......

saoudien07 said:
Thx for the reply, I am trying to open the content and upload the report here, but no luck. how can I open the log??? can not get a program to do so .......
Click to expand...
Click to collapse
The log is just a text file. Did you check the link I posted? In TWRP: Advanced - Copy log, and then post the resulting file.

Didgeridoohan said:
The log is just a text file. Did you check the link I posted? In TWRP: Advanced - Copy log, and then post the resulting file.
Click to expand...
Click to collapse
I got a file "recovery.log" thats why I can not open it, maybe change the extention to "txt" ???

saoudien07 said:
I got a file "recovery.log" thats why I can not open it, maybe change the extention to "txt" ???
Click to expand...
Click to collapse
That would work, but you should be able to open it directly with pretty much any text editor as well. If you're going to post the log text directly, please at least use HIDE tags...

So here what I just did:
I wanted to do a last try to get that error 1 msg and get the repport directly to publicate it here...
So I decide to go to a clean basis. So,
1- Install all the stock ROM with odin. I choose the Home_CSC
Was another just CSC without Home, dont know exactly which one I had to choose, I choose Home_CSC.
2- Turn the fone off
3- Turn it back to download mode
4- Install the TWRP recovery, and I did not reboot.
5- Turn off the fone.
6- Turn on to recovery mode.
7- Format the data (yes)
8- Reboot to Recovery mode.
9- Install Magisk!
AT MY BIG SURPRISE I DID NOT GET ANY ERROR MSG!!! The installation finished without error!
So I continued...
10- install No verity
11- install SuperUS 2.82
13- Reboot the phone.
I was thinking that the root was ok, now I have a new pb. When I tryed to verify with Root Checker, it says no root. When I entered the app, it said BINARY OCCUPIED.
So any suggestion?

saoudien07 said:
9- Install Magisk!
...
11- install SuperUS 2.82
Click to expand...
Click to collapse
Say what...? You've misunderstood something, somewhere. Use Magisk OR SuperSU. Magisk is it's own root solution...
Are you by any chance using some old and outdates guides? Previously you could use SuperSU with Magisk, but that has not been the case since v13.0, well over a year ago, and MagiskSU has been around since v11.0, introduced a year and a half ago.

Didgeridoohan said:
Say what...? You've misunderstood something, somewhere. Use Magisk OR SuperSU. Magisk is it's own root solution...
Are you by any chance using some old and outdates guides? Previously you could use SuperSU with Magisk, but that has not been the case since v13.0, well over a year ago, and MagiskSU has been around since v11.0, introduced a year and a half ago.
Click to expand...
Click to collapse
You guessed right, I am not using a so old tuto, it says it is for oreo...
So I have to use or Magisk or SuperSU,right?
The thing is that i thought SuperSu is to install the SuperSU app, I did notknow that it root also the phone...
I am kind of newby to Android world, u figured it already...
So what are insterest of using Magisk or no-verity??
---------- Post added at 08:22 PM ---------- Previous post was at 08:17 PM ----------
Didgeridoohan said:
Say what...? You've misunderstood something, somewhere. Use Magisk OR SuperSU. Magisk is it's own root solution...
Are you by any chance using some old and outdates guides? Previously you could use SuperSU with Magisk, but that has not been the case since v13.0, well over a year ago, and MagiskSU has been around since v11.0, introduced a year and a half ago.
Click to expand...
Click to collapse
Can I put a link to the tuto here??
For you guys to have a lock at it?

saoudien07 said:
You guessed right, I am not using a so old tuto, it says it is for oreo...
So I have to use or Magisk or SuperSU,right?
The thing is that i thought SuperSu is to install the SuperSU app, I did notknow that it root also the phone...
I am kind of newby to Android world, u figured it already...
So what are insterest of using Magisk or no-verity??
---------- Post added at 08:22 PM ---------- Previous post was at 08:17 PM ----------
Can I put a link to the tuto here??
For you guys to have a lock at it?
Click to expand...
Click to collapse
The root management app for Magisk/MagiskSU is the Magisk Manager. SuperSU and it's accompanying app is a whole different root solution (that has been sold by @Chainfire and seemingly abandoned by it's new owners).
Magisk usually takes care of dm-verity itself, so there shouldn't be any need for an extra no-verity zip. Sometimes it is needed, but I would skip it until you've tried using Magisk only. If you don't know, dm-verity is used by Android to determine if your device has been tampered with. If you wan't to root your device (tampering), you usually have to disable dm-verity or the device won't boot at all.
If you want root with Magisk, do your list again, but skip step 10 and 11. If it doesn't boot after that, go back to TWRP and flash the no-verity zip.

Didgeridoohan said:
The root management app for Magisk/MagiskSU is the Magisk Manager. SuperSU and it's accompanying app is a whole different root solution (that has been sold by @Chainfire and seemingly abandoned by it's new owners).
Magisk usually takes care of dm-verity itself, so there shouldn't be any need for an extra no-verity zip. Sometimes it is needed, but I would skip it until you've tried using Magisk only. If you don't know, dm-verity is used by Android to determine if your device has been tampered with. If you wan't to root your device (tampering), you usually have to disable dm-verity or the device won't boot at all.
If you want root with Magisk, do your list again, but skip step 10 and 11. If it doesn't boot after that, go back to TWRP and flash the no-verity zip.
Click to expand...
Click to collapse
I just repeated all the procedure, this time just with Magisk, like you said. its installation finished without any error.
I just tryed ROOT Checker, any I finally have the root on my fone!! Thanx you very much for the support, and the explanation.
Can I use Backup/Restoration with TWRP knowing that I rooted with Magisk??

saoudien07 said:
I just repeated all the procedure, this time just with Magisk, like you said. its installation finished without any error.
I just tryed ROOT Checker, any I finally have the root on my fone!! Thanx you very much for the support, and the explanation.
Can I use Backup/Restoration with TWRP knowing that I rooted with Magisk??
Click to expand...
Click to collapse
Great to hear! :good:
You can use TWRP without any issues. Magisk has no impact on it and TWRP has it's own su.

Didgeridoohan said:
Great to hear! :good:
You can use TWRP without any issues. Magisk has no impact on it and TWRP has it's own su.
Click to expand...
Click to collapse
Thx you one more time. Going to install some of my app and configure my new fone then do a backup, for a clean restoration in some months...

I have a problem for the Backup with TWRP. When I want to do a Backup, I get this msg:
failed to mount /data (Invalid argument)
I ve looked on google to fix it, the solution I found is to change data to ext2, then back to ext4.
The pb is that it is removing everything from my phone?
Anyone is having the same issue??

Didgeridoohan said:
Your issue is that the boot image still is patched by SuperSU. Until you restore the stock boot image you won't be able to install Magisk.
https://www.didgeridoohan.com/magisk/Magisk#hn_Boot_image_patched_by_other_programs
Edit: I don't do Samsung, but from what I remember, you might need to flash AP (or something like that).
Click to expand...
Click to collapse
Hi, i am rooting samsung a5 a520w. I am following the steps in the instructions (https://forum.xda-developers.com/sa...w-to/guide-root-install-twrp-samsung-t3747535).
Now I met a problem like this:
! Boot image patched by other programs!
! Please restore stock boot image
Updater process ended with ERROR:1
Error installing zip file '/sdcard/MagiskManager/Magisk-v17.1.zip'
I have no idea where is the boot.img located. All documents in the external card is:
RMM-State_Bypass;
no-verity-opt-encrypt-6.0;
Magisk_17.1

@imcn001 Your answer is in the link from the post you quoted.

Can't revert to stock boot image from Magisk 16.4

Motorola G5 Plus
Lineage 15.1
TWRP 3.2.1
I want to go back to my stock boot image but I appear to be stuck with the Magisk 16.4 boot image.
I first ran this (I didn't know there was an updated uninstaller): Magisk-uninstaller-20170813.zip
Unfortunately I don't have the exact output because when I run this again (after running the updated one below) I have a different output now, but here's the basics of what I do remember:
- Mounting /system, /vendor
- Device platform: arm64
.
.
.
I remember it saying that the stock boot image was found, but then immediately after it said Magisk wasn't installed and then aborted.
(Magisk is definitely installed as when I rebooted the phone after that, the Magisk app said 16.4 was installed, plus I still had root).
Then I ran this: Magisk-uninstaller-20180429.zip and got:
- Mounting /system, /vendor
- Device platform: arm64
Updater process ended with ERROR: 1
Error installing zip file '/sdcard/Download/Magisk-uninstaller-20180429.zip'
Updating partition details...
...done
So I'm currently stuck at this point and I don't know what to do. If wiping everything and reinstalling Lineage 15.1 will fix this, then that's what I'll do but I'm looking for any suggestions to get my stock boot image back in place.

Try the next to last uninstaller:
https://github.com/topjohnwu/Magisk/releases/download/v16.3/Magisk-uninstaller-20180328.zip
The latest one has issues on 64-bit systems...

Didgeridoohan said:
Try the next to last uninstaller:
https://github.com/topjohnwu/Magisk/releases/download/v16.3/Magisk-uninstaller-20180328.zip
The latest one has issues on 64-bit systems...
Click to expand...
Click to collapse
That did it. Thanks!

Android 4.2 and 4.4 Mediatek bootloop after installing Magisk 18.1

Hello everybody.
I've read that 18.1 supports 4.2+ so I've tried to install in two MTK6589T devices I've. One running 4.2, the other running 4.4
CMW/TWRP gave an error mounting system, so I mounted system manually and it started flashing. Firstly it detected old root installed and disabled the old root. But when it tried to find the boot, installation was aborted because installator claims cannot find the boot on both phones.
Then I though, okay, lets reboot back to android, I will try to install a few days later, maybe its buggy now, but both phones cannot boot.
I can easily fix them by flashing rom again I guess, but I would like to know where's the issue and also post it for more people could face the same problem.
Any idea where's the problem/how to fix without rom reflashing? I've tried magisk uninstaller but after mounting system in recovery it is also giving error.
Thanks
UPDATE: For now, if no other solution is found, bootloop can be bypassed by dirty installing the rom again. But it has to be an easier workaround...
We know now that the problem is caused because of two factors merging:
1- Using Magisk.zip installer through custom recovery
2-In the case that the custom recovery CMW/TWRP installed in the phone is very old (for instance, CMW automade for MTK6589X or TWRP 2.5.0).
While installing, Magisk tries to send commands to the custom recovery that cant be understood by it, leaving the installation incomplete after some modifications in /system (read below recovery log).
Acording to the recovery, it seems that Magisk did some modifications without running correctly survival script - Adding addon.d survival script ("Unrecognized option '-Xnodex2oat'") and .zip installer is not designed to revert actions in this case.
Also, Magisk couldn't reach the boot modification step, so boot is not damaged, therefore workarounds for restoring boot won't work.
Using Magisk Unistaller.zip is also not possible as the uninstaller is mainly designed for boot backup restoration, and again, this is not the case.
Currently needed: Find what's wrong in system due to the incomplete Magisk installation to revert it back to the original state (before faulty magisk.zip installation).
Recovery log:
************************
* Magisk v18.1 Installer
************************
- Mounting /system, /vendor
- Target image: /dev/bootimg
- Device platform: arm
- Removing system installed root
- Constructing environment
- Adding addon.d survival script
Unrecognized option '-Xnodex2oat'

up!

I' also having the same problem. My Samsung J2 Prime stuck at logo after updating to 18.1. Any tips on how to fix it without resetting my phone? Thanks.
Update: Bootloop fixed. I used TWRP to restore boot image. I then update Magisk by flashing zip file from TWRP. Everything went back to normal. Hope this help.

trol_sg said:
Hello everybody.
I've read that 18.1 supports 4.2+ so I've tried to install in two MTK6589T devices I've. One running 4.2, the other running 4.4
CMW/TWRP gave an error mounting system, so I mounted system manually and it started flashing. Firstly it detected old root installed and disabled the old root. But when it tried to find the boot, installation was aborted because installator claims cannot find the boot on both phones.
Then I though, okay, lets reboot back to android, I will try to install a few days later, maybe its buggy now, but both phones cannot boot.
I can easily fix them by flashing rom again I guess, but I would like to know where's the issue and also post it for more people could face the same problem.
Any idea where's the problem/how to fix without rom reflashing? I've tried magisk uninstaller but after mounting system in recovery it is also giving error.
Thanks
Click to expand...
Click to collapse
If you have a backup of your boot image, you can just restore it using TWRP. But in case that you have no backup of boot image, you can try to get boot image from the internet and restoring using it. In my case, this is what I did.
1. Go to TWRP and then make backup of boot image of the faulty phone*. (Folder 1)
2. I used another J2 prime to create a boot image backup. (Folder 2)
3. Once that is done, copy and replace the files inside the Folder 2 into Folder 1.
4. Reboot to TWRP again then use that to restore the boot image on my stuck J2.
Tips: make backup in SD card so you can easily swap it in between the bad and good phone.
*This is to create a folder of the backup file. I did tried to directly copy and paste the backup boot image file from another good phone but TWRP didn't detect it. So this is the workaround that I come with. And it worked for me.

Thanks for your answer but I doubt your case is mine. Your device is much newer than mine and according to your comment, you've sucesfully installed previous version of Magisk without issues. This is not a problem while updating, as Magisk v. earlier than 18.1 was not compatible with android 4.2+. I think Magisk is not compatible with MT6589T even if they run 4.2 or 4.4.
I think that it cannot be a boot problem as TWRP/CWM displayed msg 'Boot cannot be found' while installing Magisk, so that I don't think boot was replaced or modified in any ways. Moreover, the bootloop is not in the boot loading, as phone can pass boot image without any problem, but it is stuck in android loading image. I'm thinking in some script or root modification that Magisk did before trying to unpack the boot, however I'm not that deep into the Magisk install to find the proper workaround.
I can restore boot backup and also I can take boot file from the original rom and flash, because in Mediatek-based devices, boot.img is inside de zip, but I dont think it will solve the problem. Anyhow I'll get back ASAP with the answer.
Any more ideas??

Nothing, boot/uboot restoration or flashing again just the boot won't fix the problem, so it's something that Magisk installator touch in /system or /data I guess, but what?

trol_sg said:
Nothing, boot/uboot restoration or flashing again just the boot won't fix the problem, so it's something that Magisk installator touch in /system or /data I guess, but what?
Click to expand...
Click to collapse
Have you read/tried this?
didgeridoohan(dot)com/magisk/MagiskIssues

Ato09 said:
Have you read/tried this?
didgeridoohan(dot)com/magisk/MagiskIssues
Click to expand...
Click to collapse
Yes, I've read them before I made the post. I've also looked for a solution in some of the threads and using search, but couldn't find a way.

Here I attach recovery.log if someone is interested to see the detailed problem.
Also, here below I attach the lines concerning the installation. All other is uninstallation tries and so on:
************************
* Magisk v18.1 Installer
************************
- Mounting /system, /vendor
- Target image: /dev/bootimg
- Device platform: arm
- Removing system installed root
- Constructing environment
- Adding addon.d survival script
Unrecognized option '-Xnodex2oat'
dalvikvm: [options] class [argument ...]
dalvikvm: [options] -jar file.jar [argument ...]
The following standard options are recognized:
-classpath classpath
-Dproperty=value
-verbose:tag ('gc', 'jni', or 'class')
-ea[:<package name>... |:<class name>]
-da[:<package name>... |:<class name>]
(-enableassertions, -disableassertions)
-esa
-dsa
(-enablesystemassertions, -disablesystemassertions)
-showversion
-help
The following extended options are recognized:
-Xrunjdwp:<options>
-Xbootclasspath:bootclasspath
-Xcheck:tag (e.g. 'jni')
-XmsN (min heap, must be multiple of 1K, >= 1MB)
-XmxN (max heap, must be multiple of 1K, >= 2MB)
-XssN (stack size, >= 1KB, <= 256KB)
-Xverify:{none,remote,all}
-Xrs
-Xint (extended to accept 'ortable', ':fast' and ':jit')
These are unique to Dalvik:
-Xzygote
-Xdexopt:{none,verified,all,full}
-Xnoquithandler
-Xjniopts:{warnonly,forcecopy}
-Xjnitrace:substring (eg NativeClass or nativeMethod)
-Xstacktracefile:<filename>
-Xgc:[no]precise
-Xgc:[no]preverify
-Xgc:[no]postverify
-Xgc:[no]concurrent
-Xgc:[no]verifycardtable
-XX:+DisableExplicitGC
-X[no]genregmap
-Xverifyopt:[no]checkmon
-Xcheckdexsum
-Xincludeselectedop
-Xjitop:hexopvalue[-endvalue][,hexopvalue[-endvalue]]*
-Xincludeselectedmethod
-Xjitthreshold:decimalvalue
-Xjitcodecachesize:decimalvalueofkbytes
-Xjitblocking
-Xjitmethod:signature[,signature]* (eg Ljava/lang/String\;replace)
-Xjitclass:classname[,classname]*
-Xjitoffsetffset[,offset]
-Xjitconfig:filename
-Xjitcheckcg
-Xjitverbose
-Xjitprofile
-Xjitdisableopt
-Xjitsuspendpoll
Configured with: debugger profiler hprof jit(armv7-a-neon) smp show_exception=1
Failed to initialize runtime (check log for details)
- Unpacking boot image
MagiskBoot v18.1(18100) (by topjohnwu) - Boot Image Modification Tool
Parsing boot image: [/dev/bootimg]
No boot image magic found!
! Unable to unpack boot image
- Unmounting partitions
E:Error executing updater binary in zip '/sdcard/Magisk-v18.1.zip'
Error flashing zip '/sdcard/Magisk-v18.1.zip'

@trol_sg I'm gonna guess it's got to do with the absolutely ancient TWRP you're using. It just can't handle everything that the Magisk installation script is trying to do...
Your best bet (if Magisk will work at all on your device) is to patch the boot image with the Magisk Manager and then flash the patched image manually. There are new and shiny installation instructions available here: https://topjohnwu.github.io/Magisk/

Didgeridoohan said:
@trol_sg I'm gonna guess it's got to do with the absolutely ancient TWRP you're using. It just can't handle everything that the Magisk installation script is trying to do...
Your best bet (if Magisk will work at all on your device) is to patch the boot image with the Magisk Manager and then flash the patched image manually. There are new and shiny installation instructions available here: https://topjohnwu.github.io/Magisk/
Click to expand...
Click to collapse
Thank you so much for your answer. So it's the recovery, but can't find newer ones, sadly. Too old phones I know, but just curious if I could make Magisk working on them, lol.
I was going into the boot modification manually right now, but in order to patch the boot I need manager installed first, and phone couldn't boot so I did dirty flash of the rom to be able to boot into it again.
Lets see what happens then. I'll be right back.
Anyhow, this is not a solution to fix the problem of bootloop that I am requesting help in case someone could face the same and did not make a backup of the phone and didn't want to make dirty re-flash. Any idea?
Update: After I did dirty flash of the rom, and now Jiayu g3s android 4.4 booted.

UPDATE: So, after patching manually boot and installing (using restore in TWRP 2.5 as image flash is not yet implemented AFAIK), phone booted and yes Magisk is working.
Magisk installation .zip through a very old recovery is making the bootloop. So that, a thing learnt now.
But, for other people facing this bootloop, can we do a research to find what magisk.zip did to the phones to leave them in bootloop? Maybe we can revert without rom flashing easily if we knew what's the issue...
Thanks in advance!

Doing a bit more tests I found that magisk.zip did something in /system so that it is left in bootloop, but still no idea why/whats causing that...

There are delay complete boot like 4 5 second in j7 prime. I didn't love this version

any more help?? up!!

trol_sg said:
Yes, I've read them before I made the post. I've also looked for a solution in some of the threads and using search, but couldn't find a way.
Click to expand...
Click to collapse
Try this.
Quote:
Originally Posted by void74
I faced this problem too this morning.
I have a Redmi Note 5 with AOSiP ROM, I don't know if it's the right way to do it, but I solved the bootloop problem this way:
- volume up and then boot to TWRP
- copied magisk uninstall to phone memory
- installed magisk uninstall
- rebooted in fastboot/bootloader mode
- flashed original boot.img extracted from stock image zip file ("fastboot flash boot boot.img")
- rebooted to TWRP
- installed magisk 17.0 zip file
- rebooted to system, all OK!
Only problem is that I lost previous magisk configuration, but it's a snap to reconfigure it!
Quote:
Originally Posted by Mangraviti
Here is what to do, if you HAVE NOT installed the new version:
1) Do not update via Magisk Manager.
2) Do not update via TWRP using the zip you can download via Magisk Manager.
3) Uninstall Magisk using Magisk uninstaller (ZIP).
4) Boot to Android.
5) Reboot to TWRP
6) Install V17 ZIP via TWRP and boot to Android.
If you HAVE INSTALLED and got a bootloop:
1) Download the uninstaller ZIP.
2) Enter TWRP during the bootloop.
3) Uninstall using the uninstaller ZIP.
4) Boot to Android.
5) Download V17.
6) Reboot to TWRP and flash the V17.
7) Boot to Android it it should be working.
-------------
Original post. https://forum.xda-developers.com/apps/magisk/bootloop-magisk-update-t3836904
Hope it help.

Ato09 said:
Try this.
Quote:
Originally Posted by void74
I faced this problem too this morning.
I have a Redmi Note 5 with AOSiP ROM, I don't know if it's the right way to do it, but I solved the bootloop problem this way:
- volume up and then boot to TWRP
- copied magisk uninstall to phone memory
- installed magisk uninstall
- rebooted in fastboot/bootloader mode
- flashed original boot.img extracted from stock image zip file ("fastboot flash boot boot.img")
- rebooted to TWRP
- installed magisk 17.0 zip file
- rebooted to system, all OK!
Only problem is that I lost previous magisk configuration, but it's a snap to reconfigure it!
Quote:
Originally Posted by Mangraviti
Here is what to do, if you HAVE NOT installed the new version:
1) Do not update via Magisk Manager.
2) Do not update via TWRP using the zip you can download via Magisk Manager.
3) Uninstall Magisk using Magisk uninstaller (ZIP).
4) Boot to Android.
5) Reboot to TWRP
6) Install V17 ZIP via TWRP and boot to Android.
If you HAVE INSTALLED and got a bootloop:
1) Download the uninstaller ZIP.
2) Enter TWRP during the bootloop.
3) Uninstall using the uninstaller ZIP.
4) Boot to Android.
5) Download V17.
6) Reboot to TWRP and flash the V17.
7) Boot to Android it it should be working.
-------------
Original post. https://forum.xda-developers.com/apps/magisk/bootloop-magisk-update-t3836904
Hope it help.
Click to expand...
Click to collapse
Hello, thanks
This method won't work in my case as in the step:
- installed magisk uninstall = gives error
Note 5 is much newer phone with a recent recovery TWRP that allows all Magisk.zips commands, but unluckyly not this case.
Also, this method is for wrong boot installation/damaged boot. In my case what Magisk damage is /system, not boot.
I wish it could be boot, because that is very easy to fix (flashing through fastboot/SP Flash tools in the case of MTK, recovering boot twrp "backup" even if you didn't make backup...) as you mentioned.
Hope someone have a great idea to revert system to origin, then we could post the solution for those who would like to install Magisk in 4.2+ old phones, and instead of doing boot flash manually, they try to flash magisk.zip and they got bootloop.

Main post updated with all thread information. Up!

Nothing?? Up!!

trol_sg said:
Hope someone have a great idea to revert system to origin, then we could post the solution for those who would like to install Magisk in 4.2+ old phones, and instead of doing boot flash manually, they try to flash magisk.zip and they got bootloop.
Click to expand...
Click to collapse
The only part of the Magisk installation that actually touches /system is if it installs the addon.d survival script. The log you posted earlier shows that it's trying to do this, for some reason, and failiing. I'd start looking there...