yashsingh1/xdaforums huggingface dataset:
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] :
Dont open the link in xda app, link is not visible, open in browser.

---------- Post added at 06:47 PM ---------- Previous post was at 06:45 PM ----------

Xda app is worst for uploading screenshots, sorry for second post.

Still cant upload screenshots,

It is "attachment 4350302" - thats the latest version.
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] SaintZ93:
Hey, dev coming over from the Axon 7. Im new to the OP world completely and hoping to bring some development as well! Just something I noticed that is very strange, how come cache is missing?
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] twinnfamous:
The cache partition has been removed. It now resides in the data partition and is no longer used for anything related to updates. One result is that wiping cache in twrp no longer does anything. If you want to clear cached data go into Settings>Storage & memory, then tap Cached data at the bottom and then tap OK.

Got that from here

https://xdaforums.com/oneplus-6/how...itions-op6-t3816123/post77066072#post77066072
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] SaintZ93:
Awesome! Thank you for chiming on that, strange that a hole directory gets removed and put into data. I feel like having cache in data would just cause problems but then again im new to all this. Went from SD820 to SD845 haha. Still a lot to learn dev wise on this device for sure. Thanks again
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] Nezorflame:
Welcome aboard! I'd suggest you to read on the recent article on A/B partition scheme to get acquainted with it: https://www.xda-developers.com/how-...ess-updates-affect-custom-development-on-xda/
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] carterson:
Please help. My phone can only reboot to twrp. I flashed 3.2.3-12 installer but it didnt ask to decrypt so my sdcard is still encrypted.
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] lollyjay:
Just install Magisk again
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] carterson:
I tried that but it still didnt work. (Magisk v18)
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] mauronofrio:
Have you tried with 3.2.3-13 version?
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] lollyjay:
Try this:

Install twrp zip

Reboot to recovery

Install Magisk

Reboot system
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] carterson:
Okay.I'll try it and let you guys know.

edit: It still doesnt work. It doesnt ask for a password to decrypt and reboots to twrp only. It might have a corrupted system. What should I do now? reflash full stock rom from twrp?
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] Istvan_86:
Hello and thanks for all the hard work on this TWRP. I´m new in all this stuff of A/B partitions and with the realease of official TWRP for OP 6T I don´t find updated instructions here on XDA about how to install the new realease (if we need it) I only found instructions in TWRP official web ( https://twrp.me/oneplus/oneplus6t.html ).

My question is that I´m on OOS 9.0.7 rooted with Magisk via patched boot.img and encrypted, in order to install TWRP should I flash magisk.zip after flashing TWRP , should I do something with the installer or jsut follow the simple steps in TWRP web and all it´s ok?

Thanks in advance and sorry for maybe my simple question but I don´t want to mess with a soft brick :D
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] Timmmmaaahh!:
I'm still trying to get my head around this A/B deal as well but don't worry about that now; installation is pretty straightforward. The steps on the Teamwin website look solid but you'll find an even better guide right here in post 1. You will indeed have to flash magisk after flashing the installer or the system won't boot but it's not much of a problem if you forget. In that case it'll just reboot to TWRP.
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] mn147:
I understand having to reflash magisk every time after an ota, but how about the magisk modules? Are they affected at way after ota update? Would I have to reflash/install all mods again?
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] niphoet:
Yes, they all need reinstalled after an update.
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] mn147:
Can titanium handle that?

OnePlus 6T @ Tapatalk
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] niphoet:
No. I'm not aware of any way to back them up.
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] mn147:
So, I would have to search ask of them again and install one by one?

OnePlus 6T @ Tapatalk
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] Istvan_86:
Thanks for your fast answer, then rmembering that I´m rooted via patched boot.img + magisk I must:

1-Boot in to TWRP using the twrp.img

2-Flash the twrp-installer.zip through recovery not the twrp.img

3-Flash magisk.zip and reboot

I´m confussed about installer.zip VS twrp.img, sorry for that, just wanting to secure the process.
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] niphoet:
When you download a module it saves to your Downloads directory. I just use Magisk Manager to reinstall all of them rather than having to search for each one.
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] mn147:
Alright, not too bad. Thanks.

Still a little ambivalent about rooting. I've got the bootloader unlocked and been reading. But I haven't rooted/flashed anything for a long time. Before, it was always on nexus devices, which seemed more straight forward than now, especially with the A/B partitions. Oh well, might just have to take the plunge.

OnePlus 6T @ Tapatalk
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] Striatum_bdr:
My magisk modules are kept when I update OOS, I just don't uninstall magisk before flashing OOS with TWRP. When magisk is flashed again it just finds magisk disk image in /data and loads it at next boot
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] mn147:
https://www.reddit.com/r/oneplus6t/comments/a5o0sb/_/ebo90r9?context=1000

Going with this process, I would simply skip step one?

OnePlus 6T @ Tapatalk
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] dl200010:
What is the difference between the version distributed here vs the TWRP site?
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] TENlll423:
Make sure to reboot to recovery after flashing TWRP installer.
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] Istvan_86:
Thanks, I should reboot to recovery using adb command right?
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] Soul Ghost:
I had the same problem.Everytime I flash full OOS (same version as what I'm using or newer) with twrp (I tried v8,v11,v12), then the twrp zip, magisk,reboot to recovery in the other slot(because system cant boot at the moment), it doesn't ask for password.If I switch back to twrp in previous slot , it works flawlessly.

To fix decryption in the OTAed slot , I always boot twrp via fastboot, then flash img to the updated slot.
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] carterson:
which version of img did you flash to the updated slot?
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] Soul Ghost:
same or newer than it in previous slot are OK.I used the same
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] carterson:
Okay. So just to make sure, boot twrp via fastboot then flash the img (not the zip installer) to the updated slot, right?
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] Soul Ghost:
YES～
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] TENlll423:
I rebooted from phone

---------- Post added at 05:42 AM ---------- Previous post was at 05:37 AM ----------

How I did it was I put TWRP IMG. TWRP installer. and Magisk v 18 on PC fastboot boot TWRP IMG.> Sideload TWRP installer> reboot to recovery> sideload Magisk> Reboot system.

I did it that way right after I unlocked bootloader..
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] damngood98:
well since it's been discussed already I'm using version 12 twrp and flashed the black play version without issue

twrp materialized :good:
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] mn147:
What do you mean by "rooted via patched boot.img"?

Is this a different root method than here ... ?

https://xdaforums.com/oneplus-6t/how-to/guide-oneplus-6t-unlock-bootloader-t3851789

OnePlus 6T @ Tapatalk
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] carterson:
Question. How do you flash img to one slot (slot a for example)? I set the active slot to a then use command fastboot flash recovery twrp-fajita-3.2.3-12.img.

Sending 'recovery' (30948 KB) OKAY [ 0.665s]

Writing 'recovery' FAILED (remote: '(recovery_a) No such partition')

Finished. Total time: 0.671s
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] Nsane457:
For the record, I was just able to build with omni-9.0 source but had to use full sources instead of platform_manifest_twrp_omni. But fastbooting the recovery.img froze up.
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] MartinX3:
I am working on a pull request for Omni 9.0 in platform_manifest_twrp_omni

But I have not many free time.

BTW platform_manifest_twrp_omni 8.1 uses the 9.0 recovery.
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] AnoopKumar:
Please share your repositories.. i too tried to build. got stuck at fastboot logo.
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] MartinX3:
Take a look at the pull requests :)
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] AnoopKumar:
Omni's repo ?
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] MartinX3:
platform_manifest_twrp_omni of course
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] AnoopKumar:
honestly i cant find it bro.:silly: please give me the link

Never mind, i got it.

https://github.com/minimal-manifest-twrp/platform_manifest_twrp_omni/pull/28
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] MartinX3:
:silly::laugh:

If you want to help me, you need to make a pullrequest for my fork.

Then I can finish the pull request for the main fork. :)
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] jackennils:
Don't know if I read it in this thread or in another one, but people said, as the internal storage of the device is still encrypted, you can only do a Nandroid backup via OTG. I now bought a cable just to find out, that still, it is not possible to backup the data part. So how is it possible if at all? As it seems, there is not really a way to do a complete backup. Please help!
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] reaper000:
Might be helpful if you thought about it this way:

TWRP cannot interact with the encrypted data partition, which includes the internal SD storage. This is why you have to use an OTG in the first place -- because TWRP cannot read the internal SD.

If the data partition cannot be read properly, TWRP cannot back it up properly either.

In other words, until we have a fully functioning TWRP, my interpretation of the current state of affairs is that almost anything we do that involves the data partition will require a full reformat (wipe internal SD) of that partition.
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] lollyjay:
I use DriveSync from the Play Store to sync my phone's major internal storage folders to my Google Drive. This way I will not lose my important files.
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] MartinX3:
I use titanium backup and its encrypted cloud backup and syncthing. :)
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] jackennils:
Thanks guys. I'll check out Titanium. Feels like back in the days. :)
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] dreinulldrei:
Is Titanium Backup a new feature of TWRP or is this just plain off topic? ;)
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] Striatum_bdr:
It's the oldest backup app

Nothing to do with TWRP
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] mauronofrio:
I think this is not the right thread where to speak about oneplus support

I hope this time i will included in OnePlus dev program, for the OnePlus 6 the community bought me the device and i made fastboot roms, tool and i pushed the actual OnePlus 6 official TWRP.

[MENTION=6143932]Funk Wizard[/MENTION] what do you think? will this be possible?
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] H4X0R46:
If OnePlus doesn't wanna give clean boot.img files to us, can't we technically dump the payload file from the flashable rom and get a boot.img that way? Like, worst case scenario, I've found tools to dump a payload.bin file here on XDA.
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] kgr:
Stock boot img is in OP
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] Funk Wizard:
I have cleaned up the thread again just to make sure it stays on development discussion. AFAIK OP does not really provide Fastboot roms publicly. Only the support has those files and they only share on case to case basis which are again password encrypted. You can send me your list of contributions with links and i can forward them to the team for consideration. Thank you for your efforts so far :good:

Edit: For the rest of discussion on OP Support please use this thread by [MENTION=5528810]Jsilver73[/MENTION]
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] mauronofrio:
Sent you a PM with my list of contributions
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] cultofluna:
Read the install instructions in the OP( Wrong command )
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] Soul Ghost:
1.boot twrp by fastboot

2.now twrp should ask you for password,input yours

3.then copy the img file into your phone via MTP or adb push(not by sideload) or OTG.

4.check which slot you are on, for example is A

5.then "install "->“install img”->find the img file you just copied,and flash it to boot partition

6.unplug USB cable and reboot to recovery,now your twrp in slot A should work properly.

If you want to fix twrp in slot B, first change active slot to B,then reboot to bootloader,and do everything above(except 3. ) one more time.
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] carterson:
Got it fixed. I just figured it out. You're the man [MENTION=8378907]Soul Ghost[/MENTION] . Thanks a lot. :)
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] Soul Ghost:
:laugh:
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] Striatum_bdr:
Don't flash the img!!!!!

Don't listen to people that don't even read the question correctly

FLASH THE INSTALLER AND DON'T BOTHER YOU WITH SLOTS.

If you flash img you'll flush the kernel as you flash the whole boot partition in fact

---------- Post added at 07:52 AM ---------- Previous post was at 07:50 AM ----------

Don't use this method-for-lazy-dummies patched .img one

Use the normal one using fastboot, temporary TWRP then flashing TWRP and magisk
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] mn147:
Aye, the normal method you mention seems straightforward. Don't really understand the way to do it or purpose of a patched boot.img

OnePlus 6T @ Tapatalk
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] Istvan_86:
I use this method: https://xdaforums.com/oneplus-6t/how-to/oos-9-0-5-root-recovery-patched-boot-t3865898

Also thanks again to all that answer my questions and the dev (s). I´m using now without any kind of problems latest official TWRP. :D
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] Timmmmaaahh!:
[MENTION=4712355]mauronofrio[/MENTION] After updating to OOS Beta 2, flashing Magisk is no longer necessary to boot successfully into system.
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] mauronofrio:
MMM, good news, in all cases always better flash it
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] indian84:
Yea. My mantra is never boot without root.

?
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] mauronofrio:
It's really a good mantra :D
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] ZeroKool76:
I would like to ask a question. Since you created the official version as well, would there be any reason why the official wont work on OB? I say this, because after updating both slots via the manual updater( I don't mess with twrp anymore) trying to use fastboot command as well as the AIO tool just leaves it on the Fastboot Splash. it wasn't until I used the -12 version, that twrp actually installed. Would be curious to hear others comments
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] mauronofrio:
Have you flashed magisk after you flashed the twrp installer?
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] Funk Wizard:
I can confirm official/12 works fine on Beta 2 :good:

Are we working on the full screen display for TWRP. The splash shows fine (Full Screen) however after the boot Main Menu and all other screens have huge padding which spoils the experience. Can we do something about it :confused:
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] ZeroKool76:
I didn't flash the installer. I fastboot flashed the img, because I chose to use the built in updater to update. SO, I lost recovery, naturally. Was just hoping someone could confirm this, or point me towards my error
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] mauronofrio:
Not understanding, what do you mean? Maybe the balck bar i added at the top of the screen to allow you to see the clock?

But why you flashed the img? it's completely no sense. You should boot the img, flash the installer and then flash magisk. Do not modify the guides if you do not know how to solve any problems.

Now what do you need?
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] Giansi:
I think you made it wrong.

To update using local update you ha ve to do this:

- Download the stock rom you want to flash from Official site or from XDA Thread

- Put the stock rom in your internal storage in the main folder;

- Go in settings/system/system updates/advanced settings/Local Update and choose your new rom;

- Click on Install and at the end of the process you need to reboot the phone;

Now you are stock, so no twrp and no root.

To have it back you have ro follow again the installation in OP of this thread:

- Enter fastboot mode

- Run "fastboot boot recoveryimgfilename.img" in command line so you will boot temporarily in twrp

- flash the installer and you are stock you need also to flash magisk or your phone will not boot again
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] Funk Wizard:
Yes i refer to the bar, both top and bottom, too much padding spoils the immersive experience IMO :(
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] ZeroKool76:
We must have a communication issue. Cuz that's exactly what I did. I booted the img, but it never booted to twrp, in order to flash the installer. It just sits on the fastboot screen. NOT the bootloader , the fastboot splash. Here is what I did. I booted to BL, fastboot flashed as well as used your AIO to boot the img and it just sits on the Fastboot Splash. Hopefully that clarifies it better
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] mauronofrio:
Now i understand what you do, the terminal gives you some errors?
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] ZeroKool76:
Did that, actually. On both slots. And running that command, with the official twrp, on OB2, sits on the Fastboot splash. Never enters twrp

---------- Post added at 06:16 PM ---------- Previous post was at 06:14 PM ----------

The command works fine, as well as the AIO. but, instead of it booting to twrp, it just sits on the fastboot splash. It's like it never fully takes or something. For lack of the proper word
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] stefr07:
Maybe you have to do this :

https://xdaforums.com/oneplus-6t/how-to/rom-stock-fastboot-roms-oneplus-6t-t3862516
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] ZeroKool76:
nope, cuz -12 works flawlessly. But, thank you for the suggestion
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] ferk:
Deleted
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] mauronofrio:
Why you shared my test builds, don't use it, it is not stable
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] ferk:
Didn't know it was test builds. Sorry, post removed.
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] TheKnux:
When you flashed the boot using the command, your screen never changed to a screen that says "press power twice to continue"? When I flash the twrp image via fastboot, command prompt will say sending was successful and I'll need to press the power button twice on my phone to actually get it to boot into TWRP, from there I can flash the installer.
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] ZeroKool76:
It said that. . Pushed it twice. Usually i would see the fastboot splash for a second and then it would boot to twrp. But, for whatever reason, it hangs on the fastboot splash, after pressing the power button twice. I'm actually hoping someone confirms that it works and that, somehow, I did something wrong. From what I understand, both builds are virtually identical. I tried about 5 or 6 times. Both, with fastboot commands as well as his AIO and got the same result. Booted the -12 version and it booted right up. This is on the OB2 update btw
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] TheKnux:
Have you thought or tried doing it the normal way and not using the AIO tool? I know it seems like you don't wanna go that route but maybe if you try it the other way it'll work.
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] ZeroKool76:
I did say that I tried the fastboot command as well i.e. fastboot boot twrp-3.2.3-0-fajita.img
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] twinnfamous:
So I guess we should have 2 versions 1 with clock and one without clock?
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] TENlll423:
Anyone try to install full 9.0.11 update yet with 3.2.3-12 ?
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] :
I think without bars the clock would be cut under the notch, i prefer padding though.
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] twinnfamous:
Downloading now I'll try for you I'm on beta 2 at the moment
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] :
Copy the full rom and share with us if possible, as vpn seems yo be not working.
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] TENlll423:
Use VPN Washington DC or Charleston West Virginia that's where I'm at and received update.
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] twinnfamous:
Will do.
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] :
Nevermind full ota is available, someone uploaded to mega. Thanks for replying.

---------- Post added at 05:43 AM ---------- Previous post was at 05:42 AM ----------

Plz Dont bother, its already available in other thread, save your bandwidth:laugh: thanks for replying.
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] Addiso:
Just to confirm 9.0.11 works with twrp -12, successfully decrypts and flashes.
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] TENlll423:
I updated to 9.0.11 with TWRP 3.2.3-12. worked beautifully..
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] valexi:
Got OTA 9.0.11. Lost TWRP. Is there any way to make TWRP survive OTA updates?
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] TENlll423:
Flash full OTA in TWRP >flash TWRP installer again> Reboot to recovery> Then flash Magisk > Reboot system
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] TENlll423:
Did you update in system/System updates? I did and when it started to install I just rebooted my phone to stop the install process and then rebooted to TWRP to install twrp method.
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] valexi:
Thanks! I thought that there might be option in developer options or somewhere to not to update recovery.

But also you can make "local update" and reboot to recovery, so you don't have to stop install process.
[OnePlus 6T  ROMs, Kernels, Recoveries, & Other Dev] Giansi:
After local update, make the device reebot normally. Then reboot in fastboot, connect device to pc and fastboot boot recovery img, in TWRP install recovery zip and install magisk zip. Reebot to system.

The normal reebot after local update is needed.