Magisk installation fail without any errors - Galaxy S III Q&A, Help & Troubleshooting

Hello everyone,
Recently I found my old galaxy S III GT-I9300 and wanted to "recycle" it by putting a Lineage ROM.
After installing the ROM (installed just fine), I wanted to use Magisk.
I took the official Magisk APK file from GitHub and added the ".zip" extension to it.
When flashing trough TWRP, there was no error, but when I reboot the phone, the Magisk app was shown but I had no root access.
I tried to flash it using the boot.img methods, but I had the same problem: Magisk did not detect any root access.
I checked if magisk could be installed on this ROM and found out that it can.
Now, I've changed my ROM several times, always with the same issue.
Please help me. I'm struggling for a month now, and I still don't know what's going on.
=========
my device
=========
model : Samsung Galaxy S III GT-I9300
android version : android pie (9)
rom : lineage 16 : link
magisk version : latest (v25.2) (flashed by TWRP and patched boot.img method)
modification : recovery (twrp 3.6.0_9-0, link)
=========
I provide my logs too. (only magisk startup beacause I can't upload my recovery logs)
thank you in advance for your help.

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maybe like that...

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CyberNautica said:
Hello everyone,
Recently I found my old galaxy S III GT-I9300 and wanted to "recycle" it by putting a Lineage ROM.
After installing the ROM (installed just fine), I wanted to use Magisk.
I took the official Magisk APK file from GitHub and added the ".zip" extension to it.
When flashing trough TWRP, there was no error, but when I reboot the phone, the Magisk app was shown but I had no root access.
I tried to flash it using the boot.img methods, but I had the same problem: Magisk did not detect any root access.
I checked if magisk could be installed on this ROM and found out that it can.
Now, I've changed my ROM several times, always with the same issue.
Please help me. I'm struggling for a month now, and I still don't know what's going on.
=========
my device
=========
model : Samsung Galaxy S III GT-I9300
android version : android pie (9)
rom : lineage 16 : link
magisk version : latest (v25.2) (flashed by TWRP and patched boot.img method)
modification : recovery (twrp 3.6.0_9-0, link)
=========
I provide my logs too. (only magisk startup beacause I can't upload my recovery logs)
thank you in advance for your help.
Click to expand...
Click to collapse
ive had the same issue with lineageos19. the problem is you cant just install magisk it will not work. it needs to be patched into the build. just take this one it instead:, it has magisk preinstalled: https://sourceforge.net/projects/re...RR-N-v5.8.5-20171217-i9300-Final.zip/download
best rom for s3 imo.. and then dont update magisk it will also break. just leave as it is. "linux"
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Ok. Thanks for your help. I'll try.

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I found something interesting... When I installed the Magisk app, it didn't allow me to install modules or manage root access. However, when I opened the Android terminal app and typed the "su" command, the "grant root access" notification from Magisk popped up on the screen. I was very curious, so I tried to install a root browser, and it worked! I had root access. However, in this case, because I wanted modules, it was not very helpful for me.
Maybe a glitch to report idk...

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CyberNautica said:
I found something interesting... When I installed the Magisk app, it didn't allow me to install modules or manage root access. However, when I opened the Android terminal app and typed the "su" command, the "grant root access" notification from Magisk popped up on the screen. I was very curious, so I tried to install a root browser, and it worked! I had root access. However, in this case, because I wanted modules, it was not very helpful for me.
Maybe a glitch to report idk...
Click to expand...
Click to collapse
when magisk fails to install it may still give you root access. with a faulty installation you may also get su / root even without prompt / grant. like a perm root. there are also several steps on uninstallation. removing the app does not remove su.