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Can't install TWRP in Android 9

I was running stock OOS with Android 8.1 with the normal TWRP and Magisk working. When the OOS 9 got out, I installed the full OTA through TWRP (dirty flash) and everything went perfectly, with no problems whatsoever, but I lost TWRP and Magisk, of course.
Now in Android 9 I can't seem to reinstall TWRP (I'm trying with the latest bluespark): I can boot TWRP from fastboot and install Magisk, everything is fine, Magisk works great. However, when I try to install the TWRP zip (through the fastboot loaded TWRP), the phone freezes at the bootloader warning and doesn't boot (and I have to reinstall the full OTA zip to get the phone working again). Or, some other times, it reboots always to the recovery and never to the OS. Any ideas on how to solve this? Thanks in advance.

What version of bluespark are you using ?? v2

Glsoto said:
What version of bluespark are you using ?? v2
Click to expand...
Click to collapse
9.85v2

first fastboot boot twrp.img, the install twrp.zip , reboot recovery and then magisk..

I also tried to fastboot boot blu_spark twrp V2 IMG.... This ended in a black screen. I used the latest official twrp without a problem on pie.

Glsoto said:
first fastboot boot twrp.img, the install twrp.zip , reboot recovery and then magisk..
Click to expand...
Click to collapse
Thanks! Did it in that exact order and now everything works. I was forgetting to reboot the recovery before installing Magisk.

don't flash magisk on the temporary TWRP

Hexyl said:
I also tried to fastboot boot blu_spark twrp V2 IMG.... This ended in a black screen. I used the latest official twrp without a problem on pie.
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Click to collapse
Cuz of kernel panic. When you boot into twrp after fastboot command - unplag your cable from pc when the command is done, then disable mtp, connect to pc and re-enable mtp.
Dont forget to click thanks
And yeah, use blu spark's TWRP, not official one

Came here from google.
Glsoto said:
first fastboot boot twrp.img, the install twrp.zip , reboot recovery and then magisk..
Click to expand...
Click to collapse
This procedure didn't work for me, for some reason "fastboot boot twrp.img" was leading to black screen.
What worked for me was
1) Boot to fastboot
2) fastboot flash twrpXXX.img
3) Without rebooting, select recovery from fastboot's bootloader menu
4) If you are able to boot in twrp this time, then flash blu spark twrp.
5) Reboot
6) Try to reboot in recovery as usual
If all worked well, you should see twrp recovery.
Cheers.

Alekcander said:
Came here from google.
This procedure didn't work for me, for some reason "fastboot boot twrp.img" was leading to black screen.
What worked for me was
1) Boot to fastboot
2) fastboot flash twrpXXX.img
3) Without rebooting, select recovery from fastboot's bootloader menu
4) If you are able to boot in twrp this time, then flash blu spark twrp.
5) Reboot
6) Try to reboot in recovery as usual
If all worked well, you should see twrp recovery.
Cheers.
Click to expand...
Click to collapse
Hi
I have same problem ... after installing twrp i have black scream. twrp doesnt boot
I trying to use this method but cmd give me ]
C:\Android>fastboot flash twrp-3.3.1-x_blu_spark_v9.101_op6.img
unknown partition 'twrp-3.3.1-x_blu_spark_v9.101_op6.img'
error: cannot determine image filename for 'twrp-3.3.1-x_blu_spark_v9.101_op6.img'
I have restored phone with msn download
OnePlus is again unlocked
I have this problem sins i tried to install magisk and after reboot my op doesn't boot to OS with crash error
any ideas ?

jasiorr said:
Hi
I have same problem ... after installing twrp i have black scream. twrp doesnt boot
I trying to use this method but cmd give me ]
C:\Android>fastboot flash twrp-3.3.1-x_blu_spark_v9.101_op6.img
unknown partition 'twrp-3.3.1-x_blu_spark_v9.101_op6.img'
error: cannot determine image filename for 'twrp-3.3.1-x_blu_spark_v9.101_op6.img'
I have restored phone with msn download
OnePlus is again unlocked
I have this problem sins i tried to install magisk and after reboot my op doesn't boot to OS with crash error
any ideas ?
Click to expand...
Click to collapse
You need to Fastboot boot twrp. Img

jasiorr said:
Hi
I have same problem ... after installing twrp i have black scream. twrp doesnt boot
I trying to use this method but cmd give me ]
C:\Android>fastboot flash twrp-3.3.1-x_blu_spark_v9.101_op6.img
unknown partition 'twrp-3.3.1-x_blu_spark_v9.101_op6.img'
error: cannot determine image filename for 'twrp-3.3.1-x_blu_spark_v9.101_op6.img'
I have restored phone with msn download
OnePlus is again unlocked
I have this problem sins i tried to install magisk and after reboot my op doesn't boot to OS with crash error
any ideas ?
Click to expand...
Click to collapse
yldlj said:
You need to Fastboot boot twrp. Img
Click to expand...
Click to collapse
Alekcander said:
Came here from google.
This procedure didn't work for me, for some reason "fastboot boot twrp.img" was leading to black screen.
What worked for me was
1) Boot to fastboot
2) fastboot flash twrpXXX.img
3) Without rebooting, select recovery from fastboot's bootloader menu
4) If you are able to boot in twrp this time, then flash blu spark twrp.
5) Reboot
6) Try to reboot in recovery as usual
If all worked well, you should see twrp recovery.
Cheers.
Click to expand...
Click to collapse
I have the same problem as Alekcander
When I try to use command ,, fastboot boot twrp-xxx.img nothing happens. I mean mobile restart as always but there is only black screen and notification diode shine white ...
Also Alekcander method doesn't work:
C:\Android>fastboot flash twrp-3.3.1-x_blu_spark_v9.101_op6.img
unknown partition 'twrp-3.3.1-x_blu_spark_v9.101_op6.img'
error: cannot determine image filename for 'twrp-3.3.1-x_blu_spark_v9.101_op6.img'
I tried official twrp and is the same , I tried to disconnect from usb when mobile is restarting also nothing ...
so again ... I have restored phone with msn download -> unlock bootloader...
i have this issue sins i tried to install magisk and after reboot my OP6 doesn't boot to OS and give crash error
any other ideas ?

Solved I have to update system to more recently version. Why twrp doesn't work with oxygen is 5.1.5 ?

how to root 9.0.3 after update which made me loose root

I had root on 9.0.2 did an full OTA 1,5gb even did install magisk on the second slot before rebooting the update. I tried using the one plus one click root tool but that's not working either. Does anyone has an idea what I'm doing wrong ?
Thanks for any help

Fastboot boot Blu_spark.twrp.img
Flash magisk 18.zip
Now you should be rooted

whizeguy said:
Fastboot boot Blu_spark.twrp.img
Flash magisk 18.zip
Now you should be rooted
Click to expand...
Click to collapse
I am still on 9.0.2. So can I download the complete stock rom.zip with blu_spark.twrp.img and boot into it via shell comand on phone and then flash the update , reboot the recovery and then the magisk?

Just Flash the full update in twrp following flashing twrp again before you reboot.
Also I would recommend to not reboot to system then, instead reboot to recovery again and flash full update + twrp again, this time also magisk and then reboot the system.
This way you have updated and rooted both slots and have twrp in place

I cant get TWRP to "stick" on my new pixel - following lineage directions

Got my pixel from swappa the other day. So far I:
1. Unlocked the bootloader
2. temporarily booted into TWRP 3.3.0-0 (3.3.1-0 wouldnt let me format for some reason)
3. Installed the most current microG lineage build. (and then also flashed magisk 19.3 immediately after)
It boots into lineage, but when I boot into recovery, it gives me the lineage recovery. Since when does lineage wipe out twrp?
I tried sideloading over adb and also right through the temporary twrp, but it doesnt make a difference. Also - in lineage, I see no sign of magisk - which is normally there after installing a rom and then magisk.
I also tried the twrp-pixel installer.zip, which also did NOTHING.
Am I missing something? This is my first phone with the weird dual partitions - is that why its so weird? Ive never had this problem before.
EDIT: Also when trying to flash twrp via fastboot it gives me
"(bootloader) Flashing active slot "_a"
FAILED (remote: partition [recovery] doesn't exist)
finished. total time: 1.016s"

Hi mate, here's a link regarding the lineage recovery thing. It may explain some of what you have occurring.
https://lineageos.org/Changelog-19/
I had twrp on my pixel a while back and it was sticking so not sure what that's all about. If you have booted twrp.img, flashed ROM, flashed twrp zip and rebooted it should be on both slots. You may need to activate root in Dev options to get root up and running, been a while since used it so that might not be accurate as currently on Q.

after flashing a rom you need to flash the twrp-pixel installer.zip right after. Then reboot into recovery (dont need to fastboot since the zip installs twrp to the boot.img ramdisk) to switch slots (switches automatically). Back in recovery you can install magisk.

Devices with A/B partitions do not have a recovery partition. What we think of as recovery is actually part of the boot.img file. When you update the OS, you update the boot.img. The TWRP installer .zip finds and unpacks the boot.img, then modifies it to make the device load TWRP instead of stock recovery. By default, the TWRP installer installs to both A & B partitions. If you screw something up (like flashing the wrong version of TWRP, for example) and put yourself into a bootloop, you can often recover by simply flashing the original boot.img file with fastboot flash boot boot.img .
Here's an article which was written by XDA to help explain the differences in how A/B phones work, and the ramifications for us flashers:
https://www.xda-developers.com/how-...ess-updates-affect-custom-development-on-xda/

rooting issue. oneplus 7 pro (pie)

i am trying to root and install TWRP on my oneplus 7 pro (9.5.11.GMA21AA gm1910) but its always reverting back to stock recovery. i dont know why or what step i am missing or messing up on.
heres what i am doing:
Code:
fastboot boot twrp-3.3.1-70-guacamole-unified-Pie-mauronofrio.img
then in TWRP i am sideloading the TWRP installer via advanced--sideload
Code:
adb sideload twrp-3.3.1-70-guacamole-unified-installer-mauronofrio.zip
then after that i do the magisk20 (also sideload) which is successful.
Code:
adb sideload Magisk-v20.0.zip
then i reboot the system and all is well. magisk works and passes safetynet.
but when i reboot into recovery it goes to the stock recovery and not TWRP.
whats going on? what am i doing wrong?

Boot twrp.img. Phone boots in trwp. Flash twrp.zip & Magisk Latest Stable version in twrp.

null0seven said:
Boot twrp.img. Phone boots in trwp. Flash twrp.zip & Magisk Latest Stable version in twrp.
Click to expand...
Click to collapse
thats exactly what i am doing as i mentioned in my original post.
but when i reboot into recovery it loads STOCK recovery and not TWRP.

cylent said:
thats exactly what i am doing as i mentioned in my original post.
but when i reboot into recovery it loads STOCK recovery and not TWRP.
Click to expand...
Click to collapse
It seems like one partition have the stock recovery

cylent said:
thats exactly what i am doing as i mentioned in my original post.
but when i reboot into recovery it loads STOCK recovery and not TWRP.
Click to expand...
Click to collapse
You say that Magisk works fine. Flash twrp.zip with Magisk > Modules. Reboot to recovery with Magisk. Flash Magisk again.
Another version. Go to Magisk > Downloads and flash TWRP A/B Retention Script.

OnePlus 7 pro root problem

Hello.yesterday i tried to root my OnePlus 7 pro.i unlocked the bootloader first and then I have installed the twrp on slot a and slot b.then I have installed magisk,from this moment the WiFi on my phone stopped working.(when I am turning them on the automatically turned off)I tried again to flash stock ROM and twrp but when I install magisk I had the same problem.Then somehow I accidentally bricked the phone and today I have the stock ROM with unlocked bootloader and I need your help to root.

You my friend need to learn how to write clearly xD.
Continuing where you left off this is how you achieve root with Magisk:
1.Boot into the bootloader
2. Using cmd (I assume you installed ADB drivers and fast boot drivers already if not Youtube a guide) use the following command:
fastboot boot <twrp image file here>
once you're in TWRP you can flash the TWRP install ZIP.
Once you're done with that Reboot -> Recovery.
3. Flash Magisk and you're done.
I doubt you're really bricked. Since you have the bootloader unlocked just do the button combo to get into recovery or the bootloader.

Thats the method i did.the real problem is the magisk.are there stable or better magisk versions?

The phone now is stock and unrooted

panagiwtis90 said:
Thats the method i did.the real problem is the magisk.are there stable or better magisk versions?
Click to expand...
Click to collapse
20.3 is the latest version and works perfectly fine on mine
o.o
How is it not stable?

I dont know if i did something wrong.the only difference from HermitDash method is that this comand (fastboot boot <twrp image file here>) not worked for me so i used this
fastboot flash boot_a path-to-twrp.img" and this fastboot flash boot_b path-to-twrp.img"

panagiwtis90 said:
I dont know if i did something wrong.the only difference from HermitDash method is that this comand (fastboot boot <twrp image file here>) not worked for me so i used this
fastboot flash boot_a path-to-twrp.img" and this fastboot flash boot_b path-to-twrp.img"
Click to expand...
Click to collapse
Can you Share a screen capture of your twrp file and your fastboot command

I will try again later and post screenshots

Dont understand.
HermitDash said:
You my friend need to learn how to write clearly xD.
Continuing where you left off this is how you achieve root with Magisk:
1.Boot into the bootloader
2. Using cmd (I assume you installed ADB drivers and fast boot drivers already if not Youtube a guide) use the following command:
fastboot boot <twrp image file here>
once you're in TWRP you can flash the TWRP install ZIP.
Once you're done with that Reboot -> Recovery.
3. Flash Magisk and you're done.
I doubt you're really bricked. Since you have the bootloader unlocked just do the button combo to get into recovery or the bootloader.
Click to expand...
Click to collapse
I dont understand why they say after you boot into twrp from fastboot to reflash twrp.zip file in twrp. I never do and it still works the same. And when you do flash the twrp.zip it says your now unrooted flash magisk. And when you flash magisk it actually then unroots magisk. The best way to root the oneplus 7 pro is using payload extractor and patching the boot.img with magisk. and booting magiskpatched.img then after installing the magisk manager go to modules and flash twrp from there. alot easier.

Can you explain this easier method you said here to try it as i am a noob?

panagiwtis90 said:
Can you explain this easier method you said here to try it as i am a noob?
Click to expand...
Click to collapse
Okay, new to this thread. Where are you at right now? Booting? Which OS, TWRP, Magisk versions?

I am at 10.3 stock rom without root and twrp(just unlocked bootloader)

panagiwtis90 said:
I am at 10.3 stock rom without root and twrp(just unlocked bootloader)
Click to expand...
Click to collapse
I am on the same version what I did was find the patched boot image with magisk for Android 10 flashed it using adb then installed magisk manager and I had root.
https://forum.xda-developers.com/on...atched-boot-image-oneplus-7-pro-t3964345/amp/

panagiwtis90 said:
I am at 10.3 stock rom without root and twrp(just unlocked bootloader)
Click to expand...
Click to collapse
https://forum.xda-developers.com/oneplus-7-pro/how-to/guide-bootloader-unlock-twrp-install-t3940368
Follow this guide and you won't need to use the patched boot,img file. I've never liked using the patched boot img.

Thank you GeekMcLeod your method worked

amaroney55 said:
I dont understand why they say after you boot into twrp from fastboot to reflash twrp.zip file in twrp. I never do and it still works the same. And when you do flash the twrp.zip it says your now unrooted flash magisk. And when you flash magisk it actually then unroots magisk. The best way to root the oneplus 7 pro is using payload extractor and patching the boot.img with magisk. and booting magiskpatched.img then after installing the magisk manager go to modules and flash twrp from there. alot easier.
Click to expand...
Click to collapse
It's just easier than having to manually extract the boot.img
fastboot boot twrp is just to get twrp up and running then flashing the script actually installs it.
Yes it does say that it'll unroot you but for those that are unrooted already this step doesn't do anything.
After flashing you reboot TWRP so it works fresh post-script.
Then install magisk as usual and reboot to system done.
This is if you want both TWRP and Magisk all done at the same time vs booting the boot.img installing Magisk then installing TWRP where I can have it all done within TWRP which is the usual route people take to get to root.

My comment below in red font:
amaroney55 said:
I dont understand why they say after you boot into twrp from fastboot to reflash twrp.zip file in twrp. I never do and it still works the same.
Fastboot boot twrp just remotely boots a "temporary" (one time) instance of TWRP, but does not install TWRP to the device. Flashing the TWRP installer zip is for installing TWRP on the device. This is optional and a matter of personal preference, and not needed to achieve root. What the installer zip does, is extract the boot.img and injects TWRP, then installs that modified boot.img back to the phone.
And when you do flash the twrp.zip it says your now unrooted flash magisk.
Correct. When the installer zip patches the boot.img to install TWRP (as described above), root is removed.
And when you flash magisk it actually then unroots magisk.
Not correct. Magisk roots the phone. If you flashed Magisk and did not have root, what may be happened, is that you may have flashed Magisk to one slot, then somehow booted to the other (unrooted) slot.
The best way to root the oneplus 7 pro is using payload extractor and patching the boot.img with magisk. and booting magiskpatched.img then after installing the magisk manager go to modules and flash twrp from there. alot easier.
Manually patching the boot.img is certainly a valid way to achieve root, and maybe more reliable. I'd hesitate to say it is "easier".
Also, if you flash TWRP as a Magisk module, you will still need to flash Magisk again to have root. Flashing TWRP by that method will still unroot the phone, same as the other method (as I described above).
Click to expand...
Click to collapse
---------- Post added at 08:56 AM ---------- Previous post was at 08:44 AM ----------
panagiwtis90 said:
I dont know if i did something wrong.the only difference from HermitDash method is that this comand (fastboot boot <twrp image file here>) not worked for me so i used this
fastboot flash boot_a path-to-twrp.img" and this fastboot flash boot_b path-to-twrp.img"
Click to expand...
Click to collapse
You did it wrong. Those two command do completely different things. So the difference in commands is a big one.
As I mentioned above, fastboot boot TWRP.img just remotely boots a temporary (one time) instance of a boot.img that has been patched to include TWRP. Then the correct way to install TWRP to the phone is (from the temporary booted TWRP) flash the TWRP installer zip, which properly extracts your phone's boot.img partition, patches it to install TWRP, then installs the modified boot.img back to the phone.
Fastboot flash boot TWRP.img does something completely different. It flashes the img to the boot partition. "Flash" is the action in this case, and "boot" is the location (not the action). The TWRP img is not meant to be installed to the phone. Don't know for sure, but I highly suspect that boot.img has some differences depending on your 7 Pro model. So when folks incorrectly flash TWRP.img, they are replacing the phone's kernel and breaking WiFi, and sometimes cell network and/or Bluetooth. Again, the correct way to install TWRP is to use the installer zip (as described in the previous paragraph) which properly takes your phones specific boot.img and patches it.
What folks should understand, is that A/B partition devices (like the 7 Pro) do not have a discrete recovery partition. Recovery is part of the boot partition, which also contains the kernel. So by doing "flash boot" you are messing with the kernel in ways you should not, and therefore results like broken WiFi is not surprising.
---------- Post added at 09:06 AM ---------- Previous post was at 08:56 AM ----------
panagiwtis90 said:
Thats the method i did.the real problem is the magisk.are there stable or better magisk versions?
Click to expand...
Click to collapse
Magisk if fine. Your issues are due to pilot error, as I've described above.