yashsingh1/xdaforums huggingface dataset:
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] X04D:
Sorry, I think I'm confused.

The TWRP method in this thread doesn't work, it requires extra steps/modifications. In order to get those files and instructions you have to go onto Telegram where they help you for a price? So basically this thread is just used to steer people towards a paid service?
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] jimbo77:
This thread is only for TWRP. If you read the OP you would notice that.

At any point the OP is steering people to a paid service of any sort. Also, the Telegram group is also for support related to TWRP and nobody has paid to get support in there.
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] X04D:
Sorry, I said root but I meant install TWRP.
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] jrkruse:
The twrp does work. Its like any other twrp you must have unlocked bootloaders too flash twrp. There are no extra steps. The download links are there
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] X04D:
Except I have an unlocked bootloader and when I flash TWRP it reboots into stock recovery. After that I was directed to the Telegram channel where they said it doesn't work yet because multidisabler doesn't work. Did I misunderstand?
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] elliwigy:
it does work.. multi disabler doesnt fully work yet.. essentially you have to format data at some point then you also need to remove or change encryprion flags on vendor partition in fstab and then you need to remove recovery-from-boot.p from system or else twrp gets replaced by stock recovery..

i would upload a rom but ultimately its for g988u and g986u so u probably have different device
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] elliwigy:
op clearly lists compatible devices for twrp which essentially is snapdragon s20 variants.. telegram link is support group for twrp..

op isnt selling anything, has provided twrp as indicated in op for free, has support group, provides kernel sources and even treez so he is well within the rules..

to add, he clearly indicates in op what needs to be done to get it fully working.. if u dont understand the steps join tgram group for further info/support.. not sure how its confusing really.. at no point does anyone ask you for money to use twrp, edpectations/requirements are you have a compatible device with bl unlocked as always with twrp on any device.
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] elliwigy:
to add, your issue is clearly listed in op and how u fix it
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] afaneh92:
New build is up, multidisabler can be found in telegram group, once its confirmed working I will update OP.

15.09.2020 - Update to latest TWRP source with more dynamic partitions support.
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] jrkruse:
Good Job
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] ChongoDroid:
that's how you preserve your opsec tho and this seems like one worth saving.
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] jrkruse:
The OP is not profiting from this. The stuff posted also works for SM-G9800 series which have traditional unlockable bootloaders. The link for US unlocks is just a courtesy for those asking how we did it nothing more no hidden agenda no grand scheme too steal info just a courtesy thats it.
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] ChongoDroid:
I just went through the process, I didn't mean profit I just meant the persons privacy.

So awesome to be unlocked finally.
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] YodaDude2011:
This says it supports the G981U, I have this model of the s20 and I cannot bootloader unlock. How do I do this?
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] ChongoDroid:
There's a paid service, shoot me a pm as it's not allowed to solicit on xda
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] freeman_108:
Failed to mount carrier

I have problem in mounting carrier partition in twrp. Anyone facing the same problem? I have trying flash my homemade rom when I try flash it in twrp it said failed to mount carrier partition.

Thanks
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] TheViciousGames:
Anyone managed to install Viper4Android?
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] red5pade:
I have yet to try this yet but without custom roms, this is mainly to flash adawy and viper and other root apps right... Maybe debloat while you're at it.

Will this recovery just get overwritten when one ui 3.0 gets released?
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] afaneh92:
New TWRP builds up

15.09.2020 - Update to latest TWRP source with more dynamic partitions support.
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] Mizuchi550:
It works on Japanese model G986J(SCG02), but I can't operate on carrier.

And, if you don't mind, can you make the multidisabler work on the G986J as well?

This text was prepared by machine translation.
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] afaneh92:
Its seems some devices dont have carrier partition. will remove it next build.

Sure I will add support for multidisabler soon.

Give me the output of:

getprop ro.boot.bootloader
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] Mizuchi550:
SCG02KDU1ATG6

Thanks for the quick response.
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] afaneh92:
Please confirm its working, I added support for SCG01, SCG02 and SCG03.
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] Misterxtc:
I just want to say thanks for this. The backup and restore saved my bacon on my 986u1. The only funny thing that happened was my phone rebooted after the first back up I made but the 2nd didn't.
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] Mizuchi550:
When I did the installation, the SmartSwitch on the PC side stopped recognizing the device. I'm not sure if this is a spec or a bug.

This text was prepared by machine translation.
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] Knolle100:
Hello, I am trying to switch the OEM lock at unlock at G9860 (CHC) version. In the developer option this is already off. Still on am in the bootloader. I would like to install TWRP. Does anyone have an idea how I can implement this.

" Custom Binary(recovery) Blocked by OEM Lock"
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] jrkruse:
Oem unlock must be toggled on then phone will reset then you can flash
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] Knolle100:
i have found a solution. Its Unlock now.

i have a china Snapdragon version. Can i install the German or US Firmware on this Device?
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] azooooooooo:
anyone can enable 5g in last firmware for g9810 tgy ?
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] Viet.molet:
If nothing goes wrong, will my data be fine after flashing?
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] jimbo77:
If you don't want to disable encryption, then yes your data will be fine. But you will not be able to do backup and restore of data in TWRP.

In order to be able yo do such you will need to remove encryption and for that multidisabler must be flashed followed by formatting data (thus loosing everything). I will recommend performing a backup either with swift backup, Titanium etc... And then proceed to format data. Keep the backup in the ext sdcard so you don't loose it
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] blackwind.:
[MENTION=4770483]afaneh92[/MENTION] Support for G981W (Canada)? And will encryption be supported in the future? Trying to determine if I need to return my phone before the return period ends. I can deal with waiting weeks (or months) for encryption support to be added, but if it's not possible at all and will never happen, I need to get rid of my S20 now and start looking at other phones.
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] afaneh92:
Yes, but you need to get your bootloader unlocked.
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] blackwind.:
And encryption support? Coming soon or not possible?
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] JBY:
I get the following error when flashing Magisk in TWRP. Appreciate any help. Thanks

S20 (G9810)

https://www.dropbox.com/s/8cc8cx92c3r1j47/IMG_20200927_180218.jpg?dl=0
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] brackett5:
This is sprints US Model correct?
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] jimbo77:
You need to disable encryption first. Otherwise anything related to data (like magisk) will not go through in TWRP
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] afaneh92:
Sure, when its ready you will post a working build here.

Just busy with other stuff and life.
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] vangry2020:
Do i need to reflash twrp after a firmware update? And do i have to format the data again after flashing twrp?
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] afaneh92:
I your firmware will wipe data in stock recovery it will encrypt the device, you can avoid by not using CSC and use Home CSC, but after flashing twrp you need to flash multidisabler again.
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] arlequin2k3:
Hello ,

I just bought myself the S20 FE 5G. Could you tell me if one of the versions you offer is compatible with my smartphone. Thank you for your reply .

@ +
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] afaneh92:
What is device model?
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] arlequin2k3:
It's the SM- G781B ;)
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] afaneh92:
Not supported, maybe in future when kernel released.
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] arlequin2k3:
ok .. thank you ...
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] B.Minir:
Hey, how are you? I have a g986u tmb US. I wanted to ask for your assistance in unlocking the bootloader. It would be greatly appreciated. Thank you
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] afaneh92:
PM me for details.
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] killaoreo7:
I have a sm-g981u. Is that supported? Also, how do I unlock the bootloader for my device?
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] freeza:
The mount read-only checkbox is missing in "mount" so it only mounts system as read-only unless you do it manually via adb.
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] afaneh92:
yes supported, PM me for details.
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] NisseGurra:
I found an strange bug:

S20 G9810

Installing latest BTI8, reboot, all ok

Installing TWRP, reboot all ok

Format data, reboot twrp, install multidisabler-samsung-2.5-afaneh92: 2nd sim lost apn and cant set any new apn either.

Is it decrypt or vaultkeeperd that going bananas?
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] Superguy:
Is this the kernel?

https://opensource.samsung.com/uploadSearch?searchValue=SM-G781

Another question: is the AT&T version of the S20+ 5G (SM-G986ULBAATT) bootloader unlockable?

Thanks!
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] afaneh92:
Yes, thanks for the link TWRP coming soon.

Yes PM for details.

PM me anyway for testing TWRP when its done.
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] afaneh92:
Kernel source are up and custom kernel ready, PM me if you want to test TWRP.
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] Superguy:
Awesome!

If it'll work on the 781U as well, I'll pick it up and give it a try.

Otherwise, I'll pick up the S20+.

Either way, you'll hear from me soon.
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] afaneh92:
G781U is locked bootloader I think, but we can manage to get you unlocked.
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] Superguy:
If you can't, back it'll go. ?
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] rdeets:
Holy ****.

$100 to unlock the device AND they want remote access to your p.c. from a China server...

Can anyone confirm this is actually legit and they don't leave a bunch of ransomware on your machine?
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] jrkruse:
Its legit
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] slipk487:
It says the g988u1 is supported but I thought the bootloader was locked
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] afaneh92:
Yes its supported but you need to unlock your bootloader first. PM or join telegram group for more info.

And I need S20 FE 5G tester for TWRP.
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] afaneh92:
New build up!

15.11.2020 - Add TWRP fastbootd support, Clean up fstab, Move kernel to gz format.
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] HTCforME:
G986U Bootloader

Any chance you could share the love? I too am looking for answers I am trying to get this US variant of the Galaxy S20 bootloader unlocked. If you could help me out It would be much appreciated! Gosh I tell you I would have never bought this phone had I known it couldn't be unlocked or this was such a hassle! Thank yo so much for your consideration! I really really would appreciate it.
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] ongxa:
Hi Dev:

Thank you for your hard work. Is it support Canadian S20+ 5G (SM-G986W) ???? Or anybro out there successed with it???
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] Smartphones13:
will this work on the R betas too?
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] afaneh92:
You need to unlock your bootloader first then flash correct twrp recovery for your device.

Contact me for more info.

No, you need to modify recovery.img and replace beta's dtbs. Check elliwigy beta rom he already ported twrp for R.
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] creep138:
I'm not trusting this. I was interested until I read the thread. No way I'm letting people take over my machines
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] afaneh92:
If you refer by "this" to unlocking bootloader, you can get your own VPN to switch to Hong Kong. but you will do all steps yourself lol.

Users whom unlocked can confirm if its trusted or not.
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] mkurzum:
I was skeptic early on, but they delivered 100%. Getting my Canadian s20+ unlocked and fully customized with twrp and root is worth every single penny, I actually own my device now and have full control and full backups.

If you're that nervous, setup a virtual machine with a vpn and wipe, you can easily protect yourself with a few steps.
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] Matce:
Hey guys,

981N here... I was able to fuly root and get TWRP installed but all files in various folders are "ksdjghsfdguywern" etc so I assume still encrypted? Can someone please assist?

thanks
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] TheViciousGames:
Flash disable encryption zip and format data partition.
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] Matce:
already did that.

do it twice?
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] Misterxtc:
You need to format data after you disable encryption.
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] Matce:
yes, did that as well. I basically set the ENTIRE phone up new after I flashed it and wiped data.

still encrypted. and for the life of me I can get edxposed on this thing
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] Misterxtc:
You will probably have to manually edit the fstab.qcom file. You would be changing fileencryption=ice with encryptable=ice everywhere in the file and then format data. It sounds like something is missing for your device. Below is a quote from the OP.

Quote:

To disable encryption manually:

You need to replace fileencryption=ice with encryptable=ice only in userdata line (maybe rest lines) in vendor/etc/fstab.qcom

To avoid stock recovery restoration manually:

Rename system/recovery-from-boot.p to recovery-from-boot.p.bak
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] Matce:
thanks for the info but I have not even the slightest idea how to do this or what this even means lol

I got magisk working, exposed bootloops and TWRP everything is encrypted... I'm getting frustrated. Everytime so much BS when you get a new phone ... lol
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] Misterxtc:
I had a bit of a headache at first but once you figure it out it's pretty simple. You could try to disable AVB with the attached file. You flash it in the user data slot and format data again then install twrp and multidisabler again.. I got the file strait from Google but had problems from the one linked in the OP.
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] Matce:
dude, thanks! This worked now. Flashed your file thru odin, wipe data, installed twrp again, and installed multidisabler in twrp. currently setting up the phone again LOL

I don't wanna bug you too much but you clearly know your stuff. How do I get edxposed to work?

I got magisk running (both 20.4 and 21.1) - so far so good.

I also get Riru 22.4 on there (at least it shows OK), but as soon as I install any edxposed (the latest canary) the phone goes into boot-loop, eventually starts after I press a bunch of buttons but EdXposed Manager says its got no framework installed...

I'm literally on this for over 12h now! lol
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] Misterxtc:
I can't help with exposed. I never mess with it. I am glad that worked for you. Enjoy.
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] jimbo77:
For edxposed you need to have a custom Kernel. My Kernel has support for it, you have a N20 right?

Check my Kernel thread that should work for you as long as you have One Ui 2.5
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] Matce:
oh, thanks for the info. I had no idea. thanks!

Here's a guide if anybody else struggles...

I downloaded the ZIP file (I have the S20 5G) and installed it in TWRP

rebooted

installed Riru 22.4 thru magisk app

rebooted

installed edxposed 0.5.0.6 4586 master sandhook thru magisk app

rebooted

WORKS.

thanks!
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] jimbo77:
Was this without a Custom Kernel?
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] JDBarlow:
Do you pass safetynet after edXposed framework installation?

Mine passed before i installed edXposed and now after removing edXposed i still can't pass safetynet :confused:
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] struckyomama:
would also like to know please
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] Matce:
late reply, sorry.

WITH your kernel.

BTW... will your kernel work with A11 as well?

Can I just flash A11 over what I have right now and all will work?

thanks
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] jimbo77:
It won't. New sources are needed for Android 11. I have already requested them, once I get them I will work on updating the Kernel for the new Android Release
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] Matce:
any rough idea when they usually release this?

Thanks!
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] jimbo77:
It varies. For some devices they take days for other weeks and then others months. The last request I made took around 6 weeks but before that was around 1 week. So I can't really tell how long will it take
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] afaneh92:
Kernel source for S20 series are up lol
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] jimbo77:
F. Yeah! Thanks for the heads up. I will take a look at it today
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] Matce:
nice, seems like they hurried it up this time!

any chance you can write a little "how to" upgrade from rooted/edxposed a10 with your kernel to a11 without losing data, etc?

thanks!
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] freeza:
Successfully compiled a kernel with new sources, waiting for U1 firmware though.
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] JDBarlow:
Can I try the kerna?? I have a 988U
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] afaneh92:
New builds Changelog:

12.12.2020 - R build: Initial release for android 11.0.

12.12.2020 - Q build: Update to latest TWRP source, Fix fastbootd.
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] JDBarlow:
Hello @afaneh thanks for this!

I downloaded from the z3q link and it's a bin file. Do I just rename it to zip??

Edit: I dl'd with a different browser all good.it was a tar thanks again works perfect on G988U
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] Duncaroo:
Is this possible on SM-G988W? I looked all over online and people are saying the bootloader can't be unlocked but it says my device is supported on this forum.
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] JDBarlow:
Yes it can be unlocked go here below...

https://xdaforums.com/t/sampwnd-usa-model-bl-unlock-info-u-u1-w.4201689/
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] X04D:
I can't seem to get into TWRP.

EDIT: Never mind, was just too slow.
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] afaneh92:
Deleted.
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] Rusland2021:
помогите как исправить?

Translation: help how to fix it?
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] afaneh92:
No love for snapdragon, you cant fix it.
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] Rusland2021:
so I will never be able to put twrp ?

do I need to install magisk first?
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] afaneh92:
So fix is meant for install?

Yes you can follow instrctions.
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] Rusland2021:
I don't understand what fix you're talking about? And I will repeat my question - do I need to install magisk to install twrp?

each installation via Odin is successful, but rebooting gives an error
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] jmariconda:
Are you on Android 11? I was having the same issue, and had to manually flash Android 10 firmware via Odin before it worked.
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] afaneh92:
He was flashing wrong files, solved on telegram.
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] Dbzfan:
Does this trip Knox?

Can I Odin but to stock if needed?

Got sprint s20 ultra and I miss root. Haven't had it for years!
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] afaneh92:
Yes it does, you can reflash stock anytime.

but you need to unlock bootloader first! check OP for unlock thread.
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] DJBhardwaj:
@afaneh92 Do we need to disable AVB by flashing the nulled VBMeta if we're going to flashing Magisk (after flashing multidisabler and decrypting of course)?
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] afaneh92:
some devices are ok with modified boot, not recovery.so you need nulled vbmeta.
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] DJBhardwaj:
Thanks. So, should we be using the vbmeta posted by jesec, or need a newer one for Android 11?
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] Misterxtc:
I've had problems with that one for some reason. I use this one from google.
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] coolgoose1:
Thanks @afaneh92. For others' help, if anyone finds it useful, I flashed TWRP on my G986U1 using this sequence:

Unlocked bootloader as I described here.

Flashed vbmeta from this thread using patched Odin.

Flashed TWRP using patched Odin but did not auto-reboot.

Rebooted into TWRP using key combination.

Format data

Flashed multidisabler from OP in TWRP.

Format data again, just to be safe.
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] scepz:
does this by any chance support S20 G981V? Or should I give it a shot?
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] afaneh92:
Yes, need to unlock bootloader first. link to my unlock thread in OP.
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] scepz:
Question. What is the point in flashing the multi disabler? I couldn't do it so I didn't bother but I booted find and could get into twrp fine
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] afaneh92:
To disable encryption and stock recovery restoration.
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] scepz:
Is it ok to NOT use the multi disabler?. I mean I flashed it already but just saying.
[Galaxy SNAPDRAGON S20 S20+ S20 Ultra Development] coolgoose1:
This thread has the details of what all it helps with.