Database Users

[Guide] How to install a custom recovery and root

OK, I see that this subject has not been properly addressed in this forum and there are a lot of users who still use tool kits,etc. for this. That's fine but you're missing out on how to more effectively manage your device. I'm writing this off the top of my head, and on my n9 which is not so easy, so I may modify it in the future.
The first thing you want to do is learn how to use fastboot. Fastboot allows you to flash image, .img, files on your device. If you've never done that start here, http://forum.xda-developers.com/nexus-9/general/guide-how-to-unlock-bootloader-flash-t3035153
Rooting is as simple as flashing a custom recovery on your device and then booting into that recovery and flashing Chainfires supersu.
So how do you flash a custom recovery? Well I strongly recommend twrp. Download the latest from here, https://dl.twrp.me/flounder/ I always find it easier to rename the file you download to simply recovery. Make sure you maintain the .img file extension. Download this onto your pc and remember what folder you downloaded it to.
Then download the supersu.zip file to your device. Download from here, https://download.chainfire.eu/696/SuperSU
Now you're ready to get started. Boot your device into the bootloader and connect it to your pc.
On your computer open the folder where you downloaded the twrp image. On an open area in that folder shift, right click on your mouse. You should see a pop up and a place to "open a command window here" In that command window type, fastboot devices. If you see your device's serial number you're good to go to flash the twrp image file.
OK, the Nexus 9 is not as easy to root as other Nexus devices. So start by typing, fastboot boot recovery.img. (Remember I told you to rename the twrp image file to recovery, if you didn't do that use the full name of the twrp file you downloaded for recovery.img) Once you boot into twrp go to install and find the supersu.zip you downloaded onto your device. Install it.
Then from twrp, boot back into the bootloader.
Once booted into the bootloader open a command window in the same folder as you have the twrp image downloaded. Then type fastboot flash recovery recovery.img
You're now rooted and have twrp installed.

Having major problems trying to do this on Marshmallow, lol.

This no longer works as described on 6.0. I can get you rooted but I can't get twrp to work properly. It doesn't decrypt the device. But you'll need a usb stick.
To the usb stick copy flar2's elemental x kernel, http://forum.xda-developers.com/nexus-9/orig-development/kernel-elementalx-n9-0-02-alpha-t2931657. Also copy supersu, http://forum.xda-developers.com/apps/supersu/2014-09-02-supersu-v2-05-t2868133
Boot into twrp:
fastboot boot twrp.img. Use twrp 2.8.7.0 and the full name of the image file
When you boot into twrp hit cancel. It'll boot into twrp but won't decrypt your device. In twrp go to mount and mount your usb stick. Then from twrp flash the elemental x kernel. Then flash supersu.
Sent from my Nexus 9 using XDA Free mobile app

jd1639 said:
This no longer works as described on 6.0. I can get you rooted but I can't get twrp to work properly. It doesn't decrypt the device. But you'll need a usb stick.
To the usb stick copy flar2's elemental x kernel, http://forum.xda-developers.com/nexus-9/orig-development/kernel-elementalx-n9-0-02-alpha-t2931657. Also copy supersu, http://forum.xda-developers.com/apps/supersu/2014-09-02-supersu-v2-05-t2868133
Boot into twrp:
fastboot boot twrp.img. Use twrp 2.8.7.0 and the full name of the image file
When you boot into twrp hit cancel. It'll boot into twrp but won't decrypt your device. In twrp go to mount and mount your usb stick. Then from twrp flash the elemental x kernel. Then flash supersu.
Sent from my Nexus 9 using XDA Free mobile app
Click to expand...
Click to collapse
so mounting the usb stick to the pc, it will be recognized by twrp?

tykalx said:
so mounting the usb stick to the pc, it will be recognized by twrp?
Click to expand...
Click to collapse
If you don't have USB stick, adb sideload worked for me to flash supersu beta 2.5.1
And I'm using stock modified kernel chainfire posted to keep selinux enforcing.

tykalx said:
so mounting the usb stick to the pc, it will be recognized by twrp?
Click to expand...
Click to collapse
No, you need a usb stick and adapter to the device. But what mrRobinson said should work too. You can do that from your pc.
Sent from my Nexus 9 using XDA Free mobile app

jd1639 said:
This no longer works as described on 6.0. I can get you rooted but I can't get twrp to work properly. It doesn't decrypt the device. But you'll need a usb stick.
To the usb stick copy flar2's elemental x kernel, http://forum.xda-developers.com/nexus-9/orig-development/kernel-elementalx-n9-0-02-alpha-t2931657. Also copy supersu, http://forum.xda-developers.com/apps/supersu/2014-09-02-supersu-v2-05-t2868133
Boot into twrp:
fastboot boot twrp.img. Use twrp 2.8.7.0 and the full name of the image file
When you boot into twrp hit cancel. It'll boot into twrp but won't decrypt your device. In twrp go to mount and mount your usb stick. Then from twrp flash the elemental x kernel. Then flash supersu.
Sent from my Nexus 9 using XDA Free mobile app
Click to expand...
Click to collapse
Thanks, that worked.
I went and installed Busybox, not sure if I needed to?
I really want to get this thing decrypted now but am happy to wait for a Marshmallow solution rather than go back. I suppose I could flash a ROM without forced encryption from the flash drive too? As long as I do a full wipe?
I only got my N9 a week ago and haven't had time to play with it so all this encryption stuff is new to me.
---------- Post added at 09:08 PM ---------- Previous post was at 09:04 PM ----------
I am rooted but can;t copy hosts file over, system is read-only, is this an encryption thing or has something gone wrong please?
---------- Post added at 09:28 PM ---------- Previous post was at 09:08 PM ----------
One more question..
If I was to factory reset and then flash the kernel and supersu would I get an unencrypted device? Or if I hit the "decrypt data" button in the "wipe" menu in TWRP? I am scared to press it, lol.

Excuse me but this only adds confusion in case of 6.0. So far the most comprehensive guide I found here is this one (see also an answer there).
That solution involves wiping data, so you need your stuff backed up somewhere. In my case I restored playstore apps from google account and just reinstalled the rest from apks.

I answered my own questions here http://forum.xda-developers.com/nexus-9/help/decrypt-marshmallow-question-t3222592. Thanks again for the help jd1639.

jd1639 said:
This no longer works as described on 6.0. I can get you rooted but I can't get twrp to work properly. It doesn't decrypt the device. But you'll need a usb stick.
To the usb stick copy flar2's elemental x kernel, http://forum.xda-developers.com/nexus-9/orig-development/kernel-elementalx-n9-0-02-alpha-t2931657. Also copy supersu, http://forum.xda-developers.com/apps/supersu/2014-09-02-supersu-v2-05-t2868133
Boot into twrp:
fastboot boot twrp.img. Use twrp 2.8.7.0 and the full name of the image file
When you boot into twrp hit cancel. It'll boot into twrp but won't decrypt your device. In twrp go to mount and mount your usb stick. Then from twrp flash the elemental x kernel. Then flash supersu.
Sent from my Nexus 9 using XDA Free mobile app
Click to expand...
Click to collapse
worked like a charm :good:

Any difference when already running 7.0?

I keep getting stuck in a bootloop after flashing SuperSu. Any thoughts on this? I've tried wiping caches/dalvik. Running latest stock version of 6, latest version of TWRP, installed proper ElementalX for Android version, boots fine after the kernel install.

sjrixon said:
Any difference when already running 7.0?
Click to expand...
Click to collapse
For N (and MM in some cases), you need systemless support - which the current version of SuperSU has. (Magisk 12.0 has it as well.)
Where Magisk (vice SuperSU) has advantages is being able to hide that you're rooted (Android/Samsung Pay, Visa Checkout, SafetyNet, etc.) - which is, in fact, why I am evaluating Magisk.
So far, I have seen next to no disadvantages to N - even on "moldy" SoCs (such as the TI OMAP in my Galaxy Nexus - the oldest hardware I've heard of - let alone seen - running N on a daily basis; I run N as a daily driver). I even prefer N to MM, let alone anything older, on the selfsame GNex (which utterly flies in the face of "common wisdom"; it makes me wonder, in fact, if "common wisdom" is a coverup for "fear of change", since said "common wisdom" predates Android by several years).

Hi,
Isn't is required to unlock bootloader first ?
Where this unlocking is done in this procedure ?
Thanks,
ranran

ranchu-panchu said:
Hi,
Isn't is required to unlock bootloader first ?
Where this unlocking is done in this procedure ?
Thanks,
ranran
Click to expand...
Click to collapse
That is always the first step and doesn't change. This thread covers the changing root methods on different Android versions.

madbat99 said:
That is always the first step and doesn't change. This thread covers the changing root methods on different Android versions.
Click to expand...
Click to collapse
Thanks,
Yet, I noticed in many threads of rooting in mediatek devices, that just flashing recovery.img and boot.img is the 1st procedure to make the device root.
Does it mean that mediatek device does not require unlocking the bootloader ?
Thx

Android N Root Working(Explained)

There are two methods to root Android N .
Method 1
Flash the Supersu.zip from custom recovery.
RC-SuperSU-v2.69-20160313161431.zip
Method 2
This method will work without custom recovery , just download it and go the fastboot and follow the steps .
CF-Auto-Root-bullhead-bullhead-nexus5x-NPC56P.zip
Just download the file
Extract it
reboot your Nexus 5X into bootloader
Now open the root-windows(If you are using windows otherwise select the file which is for your operating system)
Now the command window will open and ask you to enter any key to continue
Then press any key from your keyboard and it will automatically done the remaining process and your phone will reboot
If you device got bootloop then poweroff the device once and power on manually
Thats it you will see the SuperSu icon .
If you like hit the thanks ......

how do you get access to the files on your phone to flash this. I have twrp flashed but it wont get access to any files that are actually on phone so I can not flash SUPSERSU?

brennerj said:
how do you get access to the files on your phone to flash this. I have twrp flashed but it wont get access to any files that are actually on phone so I can not flash SUPSERSU?
Click to expand...
Click to collapse
Then try the second method , it doesnt need the TWRP recovery.

How I root my HTC One m8

adeeta said:
How I root my HTC One m8
Click to expand...
Click to collapse
Wrong forum..
Sent from my Nexus 6 using XDA Free mobile app

karthik432 said:
There are two methods to root Android N .
Method 1
Flash the Supersu.zip from custom recovery.
RC-SuperSU-v2.69-20160313161431.zip
Method 2
This method will work without custom recovery , just download it and go the fastboot and follow the steps .
CF-Auto-Root-bullhead-bullhead-nexus5x-NPC56P.zip
If you like hit the thanks ......
Click to expand...
Click to collapse
can you explain how to do the second method. Do not have experience flashing that one. Do we use android toolkit or SDK? Please elaborate. Thanks!

brennerj said:
can you explain how to do the second method. Do not have experience flashing that one. Do we use android toolkit or SDK? Please elaborate. Thanks!
Click to expand...
Click to collapse
Just download the file
Extract it
reboot your Nexus 5X into bootloader
Now open the root-windows(If you are using windows otherwise select the file which is for your operating system)
Now the command window will open and ask you to enter any key to continue
Then press any key from your keyboard and it will automatically done the remaining process and your phone will reboot
If you device got bootloop then poweroff the device once and power on manually
Thats it you will see the SuperSu icon .

Thanks autoroot worked. Also format userdata then flash twrp then flash SuperSU works but after a reboot I'm back to stock recovery again. Do we need a modified boot.img?
Edit:: OK I managed to get twrp to stick but I need password to decrypt data. Tried formatting userdata but stock recovery is back after a reboot

how to install custom recovery on nexus 5x android n dev prev 2? i stuck on splash screen (twrp 3.0.0.2)

tomgacz said:
how to install custom recovery on nexus 5x android n dev prev 2? i stuck on splash screen (twrp 3.0.0.2)
Click to expand...
Click to collapse
that because the encrypted user data
i try this method and work for me
1. clean flash the N prev 2
2. boot into bootloader
3. flash twrp
4. flash the modifed boot.img
http://forum.xda-developers.com/nexus-5x/general/4-17-16-t3360574
5. format the userdata
6. boot into the recovery and flash the SuperSU
before format the userdata, don't reboot the device
hope this can help

Well, I sideloaded super su latest after installing N preview. I cannot get txrp to read write system files, though. ANyone get twrp on N yet?

Xdevillived666 said:
Well, I sideloaded super su latest after installing N preview. I cannot get txrp to read write system files, though. ANyone get twrp on N yet?
Click to expand...
Click to collapse
Yes, I did. First, your phone must be decrypted. TWRP cannot be flashed on encrypted Android N.

ttakacs said:
Yes, I did. First, your phone must be decrypted. TWRP cannot be flashed on encrypted Android N.
Click to expand...
Click to collapse
How do I do this? Can I be on N or must I be on MM first?

Xdevillived666 said:
How do I do this? Can I be on N or must I be on MM first?
Click to expand...
Click to collapse
Three steps:
1. Disable forced-encryption & decrypt (fastboot)
Flash the modified boot.img
Format the data partition
See: http://www.droidorigin.com/decrypt-nexus-5x/
2. Reboot and copy SuperSU 2.74 to internal storage
3. Root
Install TWRP using fastboot
Boot into TWRP and flash SuperSU 2.74
See http://www.droidorigin.com/root-android-n-developer-preview/

ttakacs said:
Three steps:
1. Disable forced-encryption & decrypt (fastboot)
Flash the modified boot.img
Format the data partition
See: http://www.droidorigin.com/decrypt-nexus-5x/
2. Reboot and copy SuperSU 2.74 to internal storage
3. Root
Install TWRP using fastboot
Boot into TWRP and flash SuperSU 2.74
See http://www.droidorigin.com/root-andr...loper-preview/
Click to expand...
Click to collapse
Thanks man!! !The second link you sent me to no longer exists, though:-/
Ooops... Error 404
Oh! That's a 404. Please contact the website owner.
http://www.droidorigin.com/root-andr...loper-preview/

Xdevillived666 said:
Thanks man!! !The second link you sent me to no longer exists, though:-/
Ooops... Error 404
Oh! That's a 404. Please contact the website owner.
http://www.droidorigin.com/root-andr...loper-preview/
Click to expand...
Click to collapse
The forum software truncated the URL. Here it is: http://www.droidorigin.com/root-android-n-developer-preview/

New N release 4/7/16

Is there a way to root NCP91K version of N
I believe we need a special image or boot loader file. Please point me in the right direction.

pospower said:
Is there a way to root NCP91K version of N
I believe we need a special image or boot loader file. Please point me in the right direction.
Click to expand...
Click to collapse
Hello pospower,
I hope you are new to the community, so first of all, welcome to the Nexus 6P section.
I advise you to read the sticky threads here at the section. First in the list would be: http://forum.xda-developers.com/nexus-6p/general/questions-section-t3214020
Over to your query now. Bootloader has no relation to rooting, except one, that it should be unlocked. Unlocking the bootloader will enable you to flash TWRP recovery, which in turn would be used to flash SuperSU v2.71 flash-able zip.
For detailed instructions, please refer to section #1, #2, and #6 in the following thread: [GUIDE] Unlock/Root/Flash for Nexus 6P
I hope this helps. Best regards.
DJBhardwaj

boot.img my bad i was refering to this below
Download the latest TWRP Recovery. Please note: if you're on MHC19I or above you must use TWRP 3.0.0-1 or above, otherwise TWRP won't be able to decrypt. Also, if you want to use TWRP with the Android N Developer Preview you must use TWRP 3.0.0-1 or above, and you must also flash the modified boot.img found here.

ok got twrp installed 3.0.2.0
flashed the boot.img from above post
flashed twrp.img
rebooted bootloader
rebooted into recocery but freezws on teamwin screen

pospower said:
ok got twrp installed 3.0.2.0
flashed the boot.img from above post
flashed twrp.img
rebooted bootloader
rebooted into recocery but freezws on teamwin screen
Click to expand...
Click to collapse
TWRP is having issues with encrypted filesystems right now. You can either flash TWRP v3.0.0 or decrypt your 6P.
The decryption process should be carried out just after you flash the modified boot.img.
To decrypt, you will need to connect your device in bootloader mode and enter the following command:
Code:
fastboot format userdata
(Please note that this will wipe your complete internal storage).

OK got twrp working 3.0.0
Now it's asking for a password to get to decrypted files.
Any suggestions?

pospower said:
OK got twrp working 3.0.0
Now it's asking for a password to get to decrypted files.
Any suggestions?
Click to expand...
Click to collapse
Did you decrypt your device? Check under Settings > Security > Encrypt phone. Is it showing "encrypted"?

DJBhardwaj said:
Did you decrypt your device? Check under Settings > Security > Encrypt phone. Is it showing "encrypted"?
Click to expand...
Click to collapse
I must have

pospower said:
I must have
Click to expand...
Click to collapse
Please confirm.
And by decryption, i mean that you first flashed the modified boot.img and then formatted the userdata.

DJBhardwaj said:
Please confirm.
And by decryption, i mean that you first flashed the modified boot.img and then formatted the userdata.
Click to expand...
Click to collapse
Yes this is what I did. Followed the steps exactly.

pospower said:
Yes this is what I did. Followed the steps exactly.
Click to expand...
Click to collapse
Give a try to v3.0.0-1, and let me know.

DJBhardwaj said:
Give a try to v3.0.0-1, and let me know.
Click to expand...
Click to collapse
tried 3.0.0-1 woudnt start froze on twrp screen
do i need to decryp data again?

pospower said:
tried 3.0.0-1 woudnt start froze on twrp screen
do i need to decryp data again?
Click to expand...
Click to collapse
If you don't mind doing it, I would say Yes!

reflshed boot.img
decrpted
rebooted
copied su to download folder
reflashe boot then twrp 3.0.0 rebooted boot then to recovery againg asking for password to decriped data
ugggg

pospower said:
reflshed boot.img
decrpted
rebooted
copied su to download folder
reflashe boot then twrp 3.0.0 rebooted boot then to recovery againg asking for password to decriped data
ugggg
Click to expand...
Click to collapse
That is weird. I have done the same thing like twice or thrice since the last two days, and it has worked like a charm.
If you're decrypted, TWRP v3.0.0-1 should work fine.
Are you sure you wiped complete storage using fastboot format userdata command?

Yes

pospower said:
Yes
Click to expand...
Click to collapse
Try switching to a different version of TWRP, and see if any one of them works for you.
v3.0.0-1, v3.0.1-0, or v3.0.2-0.

{Guide} How to Root ONEPLUS 3T (Unlock bootloader, TWRP Recovery, SuperSu)

Rooting this device is actually quite a simple and easy process. Before you begin, it is recommended that you at least try to understand what each part of the process will do. Although this guide will elongate each step in order to show all of the details, the method used can be broken up into 3 main steps: Unlocking the Bootloader, Installing a Custom Recovery and finally Rooting.
1. Download the ADB For Windows from here :-
https://drive.google.com/file/d/0B0MKgCbUM0itNVB1elljU2NPR0k/view
2. TWRP: https://mega.nz/#!v9MmGQ5C!i5VroRopCVz2_Uoc6Mi2U6N4oDa0HK1SxCrkDrc4mwQ
3. SuperSu: https://mega.nz/#!eh13yLiC!3tkx_RkLg-D8T6mi35zDUB8AYEPLliBsL8yO1dmZbI8
Steps:
1.Backup Data
2.Unlock boot loader
3.Flash Recovery
4.Flash SuperSU
ENJOY
Video:
https://youtu.be/wwd31NU7VC0
Rooting OOS 4.0.3 ONEPLUS 3T
https://youtu.be/0QYp5tkBaao

Thanks for the nice guide!
What would be the clean method to flash future OOS update when rooted and with TWRP recovery?

Midomad said:
Thanks for the nice guide!
What would be the clean method to flash future OOS update when rooted and with TWRP recovery?
Click to expand...
Click to collapse
Simply flash the full ROM.zip manually in recovery, typically 1.4GB.
That means not installing the incremental mini zips. And not installing from the settings menu.
It's up to you whether you want to wipe data or cache.

Midomad said:
Thanks for the nice guide!
What would be the clean method to flash future OOS update when rooted and with TWRP recovery?
Click to expand...
Click to collapse
Download complete zip file n flash using two.

Thanks for nice guide, Just one question so dm verity error would never bother me with this method as I would like to be remain encrypted for some time being.

uttam.ace said:
Thanks for nice guide, Just one question so dm verity error would never bother me with this method as I would like to be remain encrypted for some time being.
Click to expand...
Click to collapse
yes if u follow the steps you wont have DM verity issuse.

uttam.ace said:
Thanks for nice guide, Just one question so dm verity error would never bother me with this method as I would like to be remain encrypted for some time being.
Click to expand...
Click to collapse
Dm verity zip is not needed when you flash SuperSu.

*winces* Ooh, all the files on file hosts? Why not just link to the legit sites?

Very easy to download the required files. Very simple step-by-step video guide. A+
Thanks for putting this together you made my night!

Thanks, I have unlocked bootloader, Installed TWRP, and Super Su.
one question though, when after setting my account going for nandroid backup there I found SYSTEM as well SYSTEM IMAGE.
what is difference between them, What thing should I backup.
Also there is showing your system is Unmounted, so when I should have to mount it.
Thanks to all Once again.

Hello guys, thanks for the guide!
I was wondering if anyone has faced the same problem as me - while trying to root the Oneplus 3T I constantly get a bootloop after flashing SuperSU. The latest TWRP (3.0.4.0) is installed without any problems in fastboot, the system is mounted as r/w, and I don't see any problems during flashing SuperSU package...
I've tried it before and after OOS 4.0.2, I've tried old and new, stable and beta versions of SuperSU, but either way the phone is stuck on bootscreen after flashing.
P. S. If I flash the official ROM after that - it boots up instantly without any errors... And with no root :/

I'm having the same problem

respectableafrican said:
I'm having the same problem
Click to expand...
Click to collapse
So nice to know I'm not alone!
Did you find a way to root your phone?

Try this SuperSU

I heard only SuperSU SR3 works

Just tried both versions (2.79 and the SR3 beta) - unfortunately, the same bootloop happens.

I flash twrp 3.0.4 then flashed RR N rom but twrp is not booting to system it boot again to twrp please help

nishant.roy24 said:
I flash twrp 3.0.4 then flashed RR N rom but twrp is not booting to system it boot again to twrp please help
Click to expand...
Click to collapse
Power off and boot instead of selecting reboot from twrp

hrsa said:
So nice to know I'm not alone!
Did you find a way to root your phone?
Click to expand...
Click to collapse
Oh yeah actually I did, just use the systemless root guide on r/oneplus (cant link because im new)

respectableafrican said:
Oh yeah actually I did, just use the systemless root guide on r/oneplus (cant link because im new)
Click to expand...
Click to collapse
Oh, finally - thank you so much!
Followed the guide on reddit page, and got the Magisk root, with Android Pay compatibility!
I wonder why it was so hard to find

twrp gets erased

Hello guys i need an urgent help yesterday i unlocked bootloader on my g5 plus which was running Android 8.1 everything was ok i installed twrp latest version it got installed but when i reeboted to system the twrp gets erased idk how whenever i try to boot into recovery it shows no command sign and then after pressing power button it boots into stock recovery ! Guys can anyone mention me a solution thread or just explain me what to do ! Thank you

Reinstall it, and then boot right into recovery. If I remember, there is a pop up when you go to close twrp and boot to system to keep twrp, or some such nag.

As far as i remember there were 2 files. dm-verity and forced encryption. I never needed them but if you stay on stock you will have to flash those so that twrp doesn't get replaced by stock recovery everytime you reboot. Check the how to root forum you should find more information there about this.

Or you can just root it and twrp won't erase with stock recover.

naikxda18 said:
Hello guys i need an urgent help yesterday i unlocked bootloader on my g5 plus which was running Android 8.1 everything was ok i installed twrp latest version it got installed but when i reeboted to system the twrp gets erased idk how whenever i try to boot into recovery it shows no command sign and then after pressing power button it boots into stock recovery ! Guys can anyone mention me a solution thread or just explain me what to do ! Thank you
Click to expand...
Click to collapse
Do this:
[email protected] said:
Reinstall it, and then boot right into recovery. If I remember, there is a pop up when you go to close twrp and boot to system to keep twrp, or some such nag.
Click to expand...
Click to collapse
and flash Disable_Dm-Verity_ForceEncrypt_02.04.2019:
https://yadi.sk/d/HLr5vjnkA8gaqw

Wolfcity said:
Do this:
and flash Disable_Dm-Verity_ForceEncrypt_02.04.2019:
https://yadi.sk/d/HLr5vjnkA8gaqw
Click to expand...
Click to collapse
hmmm, that's strange. I've never flashed that and never lost twrp on any of the phones I've unlocked. Is that new with unlocking Oreo?

Wolfcity said:
Do this:
and flash Disable_Dm-Verity_ForceEncrypt_02.04.2019:
https://yadi.sk/d/HLr5vjnkA8gaqw
Click to expand...
Click to collapse
Thanks but i flashed RR pie soon after flashing twrp now its working fine

[email protected] said:
hmmm, that's strange. I've never flashed that and never lost twrp on any of the phones I've unlocked. Is that new with unlocking Oreo?
Click to expand...
Click to collapse
I didn't either, as you wrote if you boot into TWRP before going to system it should stick or also if you flash magisk before booting the OS.
But there are some devices/ROMs that need the no verity flag to be disabled so flashing this file might help if TWRP won't stick (even when DM verity looks for a tampered system partition in the first case). There are also some terminal commands to do that but I forgot them at the moment.
I mainly used the zip to keep my /data partition decrypted after reformating it. When flashing Nougat magisk did the job for me but when I upgraded to Oreo /data was reencrypted again after flashing magisk and booting into system.
The above zip prevents /data from being encrypted again and may make sure that TWRP sticks.

ahhh, ok I see. Thanks for the explanation.