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I rooted my device, Samsung Galaxy S3, by connecting my device to pc via usb, and one-click-root with KingROOT application(on my pc). It automatically install a superuser on my device, but it's not the SuperSU that developed by Chainfire, instead, it's called Kingo Superuser. It works fine, but unfortunately an app did not get authorize by Kingo Superuser, it keep asking for authorization from SuperSU.
I don't know why SuperSU is asking for update even though I just install it from Play Store. Since I don't have a custom ROM, I choose Normal when asking for update method. Before I do that, I already install the .zip update file from recovery. (I saw 3 red lines, ...can't get signature..., something like that when I install it.) After it completed, device starts to reboot. The worst thing is after rebooting, my device lose root access :(

I searched for solution online about updating SuperSU and related stuff but I can't find a clear solution. So I came here, how do I update SU binary in a proper way, without a custom ROM.
Thanks.

  • Use Rashr or Flashify app to write a custom Recovery on the device. After that installing or removing actual SuperSU is very easy. You just flash a file and that's it. – Firelord Sep 12 '15 at 6:10
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SuperSU zip is an unsigned zip and can only be flagged through a custom recovery like cwm our twrp. You can search on xda for a custom recovery for your device. Use Kingroot to root your device again, use fastboot or ODIN from PC (refer to XDA for proper device-specific instructions) or Flashify to flash a custom recovery image, then full unroot from Kinguser, and then flash the SuperSu zip from custom recovery.

  • I can't find unroot option in Kinguser... – WhatWhereWhen Sep 12 '15 at 7:47
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    Then update to the latest version of Kinguser and go to root authorization settings page under settings. There is a setting, remove root permission. Use that. – Tamoghna Chowdhury Sep 12 '15 at 7:55
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    After removing root and flashing SuperSu, uninstall kinguser by using some system app remover from the play store. This is necessary as the two root managers conflict with each other. – Tamoghna Chowdhury Sep 12 '15 at 8:32
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    Update recovery. For this, you need the custom recovery named as recovery.img and placed on the internal sd card's root folder. – Tamoghna Chowdhury Sep 12 '15 at 9:41
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    Search on Google for Galaxy S3 XDA fastboot or root. You will probably also come across a future for ODIN in the process – Tamoghna Chowdhury Sep 12 '15 at 14:24

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