Kingroot stuck as system apps - Android Q&A, Help & Troubleshooting

I rooted my phone using kingroot before and after removing al root authorization i found that kingroot has been installed as system app
also whenever i open the kingroot app it restarts my phone
how could i completely remove it
there's also the problem of the phone not able to connect to google play store (no connection, cannot login account)
my phone is NTT Docomo Sony Xperia SO-O4E
tried factory reset twice, deleting cached apps data, still doesnt work
a basic rundown on how it all happened :
-uninstall some bloatware from phone
-phone starts to restart randomly
-deleted cached apps data, no more random restart
-remove kingroot root auth and uninstall
-found out that phone cannot connect to play store, also kingroot has installed itself as system app

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anonweeb said:
I rooted my phone using kingroot before and after removing al root authorization i found that kingroot has been installed as system app
also whenever i open the kingroot app it restarts my phone
how could i completely remove it
Click to expand...
Click to collapse
If your bootloader is already unlocked, the easiest way would be to restart the phone in fastboot mode, then boot (you don't need to flash it) TWRP and install SuperSU from a flashrecovery zipfile. This will remove kingroot app and running processes (mind you, there may be some dead kingroot traces left over on the filesystem - if you want to remove these too, you'll have to do so from a shell with root permissions). I haven't tried this with the Sony Xperia ZR/NTT Docomo Sony Xperia A (SO-04E), but it seems to work with most phones that are supported by TWRP. I wrote a short guide on how to do this (it's for a different device but these steps should be mostly generic if you have the necessary prerequisites in place).
Another good thing about SuperSU is that if you don't wish to keep root, it will remove itself cleanly and completely from your system (you'll find the unroot option in the apps settings). If however you would like to keep root, then SuperSU is an app that doesn't spy on you and doesn't phone home (I did a thorough check of the shell script used to install SuperSU and a rough check of the SuperSU apk using strings and wireshark only yesterday and as far as I could tell, it doesn't attempt to do anything malicious or touch files that it doesn't need to touch for its purpose, nor did it start a single internet connection by itself). The automatic NVISO analysis at https://apkscan.nviso.be/report/show/99a7841aa3eeaefa69f767602b0c454c confirms this too. Just saying this in case you decided to move away from root due to spyware concerns.
TWRP is an open source project. Their Homepage is https://twrp.me/
The TWRP image files for your device arel located here https://dl.twrp.me/dogo/
SuperSU homepage is https://www.chainfire.eu/ , the latest flashrecovery zipfile can be found here http://www.supersu.com/download
Both projects also have their own sections here on xda.
SuperSU also has it's own sections here on xda.
there's also the problem of the phone not able to connect to google play store (no connection, cannot login account)
Click to expand...
Click to collapse
Was this problem related to the rooting process in any way?
Does your internet access work otherwise?
What happens exactly when you start google play?

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hi, thank you for the reply
the phone has only been rooted once with kingroot app, which i have removed (both the supposed app and the root auth), but kingroot app installed itself as system app without my permission and whenever i open the app my phone reboots
i'll try looking for ways to flash the phone
as for the play store, it always show the no connection screen even though i can browse the internet without any problem
i tried following the steps from google help page but it doesnt seem to do anything
i'm thinking that the hosts.txt file cause this so im trying to delete it, but i found no other way to delete it without rerooting my phone
i tried factory reset twice but it doesnt seem to help either
thanks before and sorry for the late reply
EDIT : i dont think i can unlock the bootloader officially so i need an exploit

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anonweeb said:
EDIT : i dont think i can unlock the bootloader officially so i need an exploit
Click to expand...
Click to collapse
[/QUOTE]
In that case, you will have to root first. Once having gained root access you can unlock the bootloader. To root, you can either use the kingroot app you used before (not much to loose, since you already installed it and its spyware the first time, and you will later be able to remove it with SuperSU). Or you can try towelroot, although if your smartphone has seen firmware updates, that will propably no longer work. There may be other, more current options - search trough the Xperia ZR Section.
Once you have root, you can use adb and fastboot to boot the latest TWRP for Sony Xperia ZR, then install the latest SuperSU recovery flashable zip. Using that you can completely remove Kingroot even as a system app and afterwards remove SuperSU itself, which will cleanly uninstall itself via Settings.
Code:
as for the play store, it always show the no connection screen even though i can browse the internet without any problem
i tried following the steps from google help page but it doesnt seem to do anything
i'm thinking that the hosts.txt file cause this so im trying to delete it, but i found no other way to delete it without rerooting my phone
i tried factory reset twice but it doesnt seem to help either
I would try the above first, see if the playstore works again after you SuperSU has completely removed Kingroot (reboot), and if it doesn't take a look at the hosts file. Then uninstall SuperSU when you don't need root anymore...
I can help along with adb/fastboot commands, but you need to root your device first (and install the necessary drivers for your phone on your computer).
Good luck!