Database Develop

Xiaomi Redmi 4 Prime/Pro unlock Bootloader + TWRP (UnOfficially)

Important Note:
Don't Mess with the Device as I have Experience of Flashing Latest EU Rom Bricked my Device but Then i open my Device and Use Test-Point Method To unlock it Again. and i can able To flash Eu ROM V8.1.3
File Required :
1. Download _PatchLockedBL_.zip
2. Download TWRP
3. Download MI Flash
4. Minimal ADB and Fastboot.
5. Disable Driver Signature Enforcement
6. USB Cable (Deep Flash). Peel the Black and Green Cable.
7. PC
Step By Step Guid
1. Install Miflash.
2. Install Minimal ADB and Fastboot.
3. Extract PatchlockedBL.
4. Extract TWRP.zip
5. Enable USB Debugging in your device.
6. Give this Command “Adb reboot bootloader”. Device will Boot in Fastboot.
7. Then Give this Command “fastboot reboot” and when you Hit Enter, Joint(short) the Two Wires for 3 Seconds & then Release.
8. The Device Will Start in EDL / Download Mode.
9. Open MiFlash > and Flash PatchLocked BL Folder
10. and when, Flash Done. Don’t Reboot your phone
11. Hold Volume Down + power in your phone. and now your phone in Fastboot Mode.
12. Open TWRP Folder.
13. Run Doit1.bat. Wait after finish
14. and then, Run Doit2.bat.
15. after finish. Hold volume UP + power.
16. now your phone will be in TWRP. if yellow button appears, press recovery
17. press Wipe > Advanced Wipe > Wipe Dalvick , Cache, Internal storage, Data. > Swipe to Confirm Flash.
18. If you getting error when Wipe. Wipe one by one. First Wipe Dalvik > swipe to confirm flash. and then Wipe Cache > and then wipe Internal Storage > and then Wipe Data. Dont wipe system.
19. back to home twrp. press wipe > Factory Reset.
20. After finish. now Press Instal > Select Storage > USB OTG / Micro SD > Select your Recovery ROM > Swipe to confirm flash.
21. now back to twrp. press Reboot > Recovery.
22. And then press Reboot > System.
Credits :
Thanks To Alex For Giving me a Redmi 4 Prime as a Gift.
Required Files Folder Link
Video Tutorial is as Under:
Dont forget to Press THANKS button If this post helped you

It's a gift getting you aboard the red prime crew.
Happy days (=
Good work getting the prime unbricked too, your the man. Good info ' for other members too..

Raggamuffin17 said:
It's a gift getting you aboard the red prime crew.
Happy days (=
Good work getting the prime unbricked too, your the man. Good info ' for other members too..
Click to expand...
Click to collapse
Hi,
I Tried to unlock it but it failed went to twrp flashed , now its totaly bricked tried almost everything but no success, test point cant flash even with 9008 ok with drive signature off, tried qfil but got sahara fail error.
cant access emmc i think that is the problem.
not sure but i think i flashed _PatchLockedBL by twrp. and then i flashed unofficial rom, when rebooted got no edl only fastboot.
any solutions?
Thank you

Xiaomi Redmi 4 prime.
I cannot believe it was that easy. I got the unlock authorization from xiaomi 2 weeks ago and not in this world I could unlock the bootloader via the unlock tool.
Boot into EDL mode, downloaded a few different flash tools, the one that worked was the MiFlash 2015.10.28.0.
the one from the official website MiFlash 2016.08.30.0 DIDN'T recognise my phone at all.
I have a few warning in twrp about encrypted storage, but I just ignored it. I just wanted to root the phone.
Also, no need to flash supers separately, in twrp, advanced, root works 100%.
Thanks mate, you made my day!!!
D

li70 said:
Hi,
I Tried to unlock it but it failed went to twrp flashed , now its totaly bricked tried almost everything but no success, test point cant flash even with 9008 ok with drive signature off, tried qfil but got sahara fail error.
cant access emmc i think that is the problem.
not sure but i think i flashed _PatchLockedBL by twrp. and then i flashed unofficial rom, when rebooted got no edl only fastboot.
any solutions?
Thank you
Click to expand...
Click to collapse
i think you do something wrong with the Kernel otherwise its working with us, with the Test point method. but try to use different Flashing software, and specifically. MiFlash 2015.10.28.0.
MiFlash All Versions

SAFI_AFRIDI said:
i think you do something wrong with the Kernel otherwise its working with us, with the Test point method. but try to use different Flashing software, and specifically. MiFlash 2015.10.28.0.
MiFlash All Versions
Click to expand...
Click to collapse
Thank you, for helping.
I just start all over tested again test point and flashed a file found somewhere here at xda cant remember the name.
Im now with latest global rom 8.2.4
Thank you anyway

will it affect on mi cloud lock status ? i mean i have micloud locked device what about me ?

I have done this, and it works, but now i want to install the rom again in a clean way... have i only to format or wipe and flash a rom again? or will it brick?
And what about if I have done this and I want to do it in a official way? How can i reverse the process and come back to factory?

m1s3rys1gn4l said:
will it affect on mi cloud lock status ? i mean i have micloud locked device what about me ?
Click to expand...
Click to collapse
Well it won't affect your mi cloud lock system. If you flash a miui ROM, it will ask for the password of the mi account on first boot. But if you flash a non miui ROM then it won't ask anything. Use it like a new device.

Rafudus said:
I have done this, and it works, but now i want to install the rom again in a clean way... have i only to format or wipe and flash a rom again? or will it brick?
And what about if I have done this and I want to do it in a official way? How can i reverse the process and come back to factory?
Click to expand...
Click to collapse
For a clean installation copy the method under the following video. And for official unlocking method, you have to flash a fastboot ROM in edl and then try the official method. And with flashing in edl, you will get on stock (factory) ROM.
https://www.youtube.com/watch?v=iZymuP2nESM

SAFI_AFRIDI said:
For a clean installation copy the method under the following video. And for official unlocking method, you have to flash a fastboot ROM in edl and then try the official method. And with flashing in edl, you will get on stock (factory) ROM.
https://www.youtube.com/watch?v=iZymuP2nESM
Click to expand...
Click to collapse
The video doesn't work for me, first of all it errors on clean dalvik, cache, system, etc...
This didn't work me but i dont care anymore because <------------------> This other works me!!, is what i needed
And flashing in edl mode this one doesn't work too...
-------------------------------------------
OKAY
i was wrong

Rafudus said:
The video doesn't work for me, first of all it errors on clean dalvik, cache, system, etc...
This didn't work me but i dont care anymore because <------------------> This other works me!!, is what i needed
And flashing in edl mode this one doesn't work too...
-------------------------------------------
OKAY
i was wrong
Click to expand...
Click to collapse
you will find the TGZ, i mean fastboot(EDL) ROM here in this link.
Fastboot ROM

li70 said:
Thank you, for helping.
I just start all over tested again test point and flashed a file found somewhere here at xda cant remember the name.
Im now with latest global rom 8.2.4
Thank you anyway
Click to expand...
Click to collapse
can you give me the tutorial and file needed, i have problem same with you

Please can anyone reupload the PatchlockedBL file?

I, too, would like to get those files.

SAFI_AFRIDI said:
Important Note:
Don't Mess with the Device as I have Experience of Flashing Latest EU Rom Bricked my Device but Then i open my Device and Use Test-Point Method To unlock it Again. and i can able To flash Eu ROM V8.1.3
File Required :
1. Download _PatchLockedBL_.zip
2. Download TWRP
3. Download MI Flash
4. Minimal ADB and Fastboot.
5. Disable Driver Signature Enforcement
6. USB Cable (Deep Flash). Peel the Black and Green Cable.
7. PC
Step By Step Guid
1. Install Miflash.
2. Install Minimal ADB and Fastboot.
3. Extract PatchlockedBL.
4. Extract TWRP.zip
5. Enable USB Debugging in your device.
6. Give this Command “Adb reboot bootloader”. Device will Boot in Fastboot.
7. Then Give this Command “fastboot reboot” and when you Hit Enter, Joint(short) the Two Wires for 3 Seconds & then Release.
8. The Device Will Start in EDL / Download Mode.
9. Open MiFlash > and Flash PatchLocked BL Folder
10. and when, Flash Done. Don’t Reboot your phone
11. Hold Volume Down + power in your phone. and now your phone in Fastboot Mode.
12. Open TWRP Folder.
13. Run Doit1.bat. Wait after finish
14. and then, Run Doit2.bat.
15. after finish. Hold volume UP + power.
16. now your phone will be in TWRP. if yellow button appears, press recovery
17. press Wipe > Advanced Wipe > Wipe Dalvick , Cache, Internal storage, Data. > Swipe to Confirm Flash.
18. If you getting error when Wipe. Wipe one by one. First Wipe Dalvik > swipe to confirm flash. and then Wipe Cache > and then wipe Internal Storage > and then Wipe Data. Dont wipe system.
19. back to home twrp. press wipe > Factory Reset.
20. After finish. now Press Instal > Select Storage > USB OTG / Micro SD > Select your Recovery ROM > Swipe to confirm flash.
21. now back to twrp. press Reboot > Recovery.
22. And then press Reboot > System.
Credits :
Thanks To Alex For Giving me a Redmi 4 Prime as a Gift.
Required Files Folder Link
Video Tutorial is as Under:
Dont forget to Press THANKS button If this post helped you
Click to expand...
Click to collapse
My MI account is locked, What should I do?

Boot loop

Hello,
My phone is in boot loop, my P8 Lite 2017 PRA-LX1 double sim Europe failed during root and since its bricked (nano sim + micro sim or one sim one micro sd).
Huawei is really hard to unbrick firstly its firmware is not user friendly.
On the box the book and the back face of the P8 I can read "model" = PRA-LX1 only nothing more but it seems this is not the complete model name ...
I am very noob but I unlocked the bootloader without anytrouble.
I tried to restore it via micro sd (dload) and via the fastboot but it failed in both way.
I don't know if I use well fastboot and Huawei Update Extractor.
I downloaded this one PRA-LX1C530B130 : update.hicloud.com:8180/TDS/data/files/p3/s15/G1458/g104/v85917/f1/full/update.zip
1. I unzip
2. I put the update.app in huawei update extractor
3. I right click and select extract all in a subfolder near the fastbootfolder on windows
4. I run fastboot flash recovery, boot and system
For the DLoad method I just put all the unzip files in sd card it completes but didnt change anything.
The result of the two method the P8 chain restarts after restarts at the huawei boot red logo it restarts.
I tried to boot on recovery (power + vol+) and then I tried wipe cache + wipe data/factory reset but it blocks at 99% and after 3 hours I turned it off ...
I tried to boot on erecovery (power + vol-&vol+) and I used the "download latest version and recovery" but it failed too
It seems I don't download the right firmware or something else.
I am desperate so please help me

please some help ?

How you can restore your device can be found here at the end of the thread.

ChinHon said:
How you can restore your device can be found here at the end of the thread.
Click to expand...
Click to collapse
I think you forgot the link ?

Sorry !
https://forum.xda-developers.com/p8...-to-root-huawei-p8-lite-2017-android-t3582179
With dload you can not instal the firmware. Only OTA, or how in root thread described.

ChinHon said:
Sorry !
https://forum.xda-developers.com/p8...-to-root-huawei-p8-lite-2017-android-t3582179
With dload you can not instal the firmware. Only OTA, or how in root thread described.
Click to expand...
Click to collapse
Thanks for the help provided !
But I am very noob, I downloaded all the B110 zips, should I extract them and then copy files in dload folder in sdcard then press power + vol- + vol+ , am I right of I miss something ?
Then what should I do ?
Thanks again !

No, make it as here described.
https://forum.xda-developers.com/p8...ei-p8-lite-2017-android-t3582179#post71670716
Thread update 07-12:
Another method:

ChinHon said:
No, make it as here described.
https://forum.xda-developers.com/p8...ei-p8-lite-2017-android-t3582179#post71670716
Thread update 07-12:
Another method:
Click to expand...
Click to collapse
So
1 I download : http://update.hicloud.com:8180/TDS/data/files/p3/s15/G1458/g104/v75952/f1/full/update.zip unzip it then put the files in sdcard and try to flash power vol+ + vol- ?
2 I do the same with the other link unzipped ?
and then ?
Excuse me I don't want to bore/annoy you but I don't understand the instructions ...

Oh no, nothing unzip.
1. First flash with ADB TWRP Recovery.
2. Flash in TWRP the update.zip. The error message
ignore .
3. Then flash the other zip files .
4. Now flash with adb the stock recovery,
5. make a Factoryreset and
6. after the reboot receive a OTA update to B164.

ChinHon said:
Oh no, nothing unzip.
1. First flash with ADB TWRP Recovery.
2. Flash in TWRP the update.zip. The error message
ignore .
3. Then flash the other zip files .
4. Now flash with adb the stock recovery,
5. make a Factoryreset and
6. after the reboot receive a OTA update to B164.
Click to expand...
Click to collapse
Thanks again for your patience and your answers !
So firstly I downloaded prague311.img & flashed it.
Then I started in TWRP where I have 8 buttons.
for the 2. => I selected all zip files (4) and put them in sdcard then I selected in TWRP install : uptade.zip I let the option unticked
It returns me E:unknown command error & uptader process ended with error: 7 & error installing zip file '/external_sd/update.zip
3=> guess it was the error I had to ignore ? then I selected install and add more zip to flast the 3 other zips.
It returned me same error guess its not normal ?
should I continue ?
Thanks again for your patience !

The error should have been only with update.zip. Try the Reboot. If it does not start, it becomes difficult. Flash now the stock recovery, makes there a factoryreset. Flash then again TWRP and repeat the flashing update.zip and then the others. Then reboot.

ChinHon said:
The error should have been only with update.zip. Try the Reboot. If it does not start, it becomes difficult. Flash now the stock recovery, makes there a factoryreset. Flash then again TWRP and repeat the flashing update.zip and then the others. Then reboot.
Click to expand...
Click to collapse
sorry had a bigger problem, when you wrote flash recovery should I use fastboot flash recovery recovery stock.recovery.p8.lite.2017.img or the twrp methode ?
I did the fastboot => then disconnect the smartphone from computer => then power + vol+ => wipe data / factoryreset (succes) => select reboot + powerbutton => vol+ + power => fastboot flash recovery prague311.img => then disconnect the smartphone from computer => then power + vol+ => install update.zip => returns error => reboot power + vol+ and install the 3 other zip update_PRA-L31_hw_normal.zip => returns me the same error than before :/
Then the smartphones boots stuck on huawei red logo then I have Huawei eRecovery
Donload latest ... . . Reboot & Shutdown ...

Take this method from the root thread. It succeeds to 99%.
(How to unbrick your LX-1)

ChinHon said:
Take this method from the root thread. It succeeds to 99%.
(How to unbrick your LX-1)
Click to expand...
Click to collapse
Thanks again for your help !!
You forgot the link I think so.

https://forum.xda-developers.com/p8...ei-p8-lite-2017-android-t3582179#post71670716

[ROOT] J7 prime - CF AUTO ROOT [ SM-G610F - SM-G610M]

Here we have root for stock rom Thanks to the Chainfire Team.
Everything done by them so all thanks and credits are for them
Download
https://download.chainfire.eu/1036/CF-Root/CF-Auto-Root/CF-Auto-Root-on7xelte-on7xeltedd-smg610f.zip
Installation
-Enable USB debugging and OEM unlocking in the settings
- Put your phone in download mode (turn off phone, then hold VolDown+Home+Power to boot - if it asks you to press a button to continue
-Flash the CF-Auto-Root package as AP in ODIN(Comes within the zip file), and your device should reboot into a modified recovery (signified by a large red Android logo) and it will install SuperSU for you and restore the stock recovery, and reboot back into Android.
I tested it on my device and it worked normally
I will not be responsible for any damage to your device, but following the steps will normally work normally
I just tested with ROM stock 6.0.1 with security patch from 1 July 2017
.

Hayleyw2 said:
Here we have root for stock rom Thanks to the Chainfire Team.
Everything done by them so all thanks and credits are for them
Download
https://download.chainfire.eu/1036/CF-Root/CF-Auto-Root/CF-Auto-Root-on7xelte-on7xeltedd-smg610f.zip
Installation
-Enable USB debugging and OEM unlocking in the settings
- Put your phone in download mode (turn off phone, then hold VolDown+Home+Power to boot - if it asks you to press a button to continue
-Flash the CF-Auto-Root package as AP in ODIN(Comes within the zip file), and your device should reboot into a modified recovery (signified by a large red Android logo) and it will install SuperSU for you and restore the stock recovery, and reboot back into Android.
I tested it on my device and it worked normally
I will not be responsible for any damage to your device, but following the steps will normally work normally
I just tested with ROM stock 6.0.1 with security patch from 1 July 2017
.
Click to expand...
Click to collapse
Hi will it work for version 7.0 also

it's working fine for me
i have "G610FDDU1BRF2" with android version 7.0 and it gets installed successfully
thanks

How to change Supersu with Magisk?

Razortm said:
it's working fine for me
i have "G610FDDU1BRF2" with android version 7.0 and it gets installed successfully
thanks
Click to expand...
Click to collapse
How to restore stock recovery

Ryan.XM said:
How to restore stock recovery
Click to expand...
Click to collapse
Flash the cf auto root and it will automatically change your recovery into stock.

bjpp21 said:
Flash the cf auto root and it will automatically change your recovery into stock.
Click to expand...
Click to collapse
Ok thanks

I have J7 prime [SM-G610F] with stock andriod 8.1, samsung experience 9.5 and 1 November 2018 security patch will it still work?

I don't think so. I think the J7 with 8.1 is impossible to root? I can't seem to find an answer on this.

lordbaal19 said:
i don't think so. I think the j7 with 8.1 is impossible to root? I can't seem to find an answer on this.
Click to expand...
Click to collapse
its not impossible to root j7 on oreo..just search here in xda and you will find the impossible is really possible.

Well the TWRP thread has no real answers and this method doesn't work either.

I have done it
LordBaal19 said:
Well the TWRP thread has no real answers and this method doesn't work either.
Click to expand...
Click to collapse
yes, I have made root in my SM-G610m with Android 8.1 and it was with TWRP, and I have learned it from YouTube and in Spanish language.
For now I do not have available Super User. I think this post will work for me

ernestoi said:
yes, I have made root in my SM-G610m with Android 8.1 and it was with TWRP, and I have learned it from YouTube and in Spanish language.
For now I do not have available Super User. I think this post will work for me
Click to expand...
Click to collapse
Found a way:
LordBaal19 said:
Which one do you recommend? At which point do I have to install it and then I don't need to install no-verity-opt-encrypt-6.0?
EDIT: I think I finally got it. I did it like this:
1. Ok, so the phone as a fresh 8.1.0 system (just flashed the 7.0 and then it updated OTA in a matter of minutes). I enter the phone, enable the developer mode, enable OEM Unlocking and USB Debug.
2. Then I put the phone on download mode, flash the TWRP recovery disabling the auto-reboot on Odin so it doesn't boot to system automatically. This seem important since otherwise the recovery goes back to stock.
3. Then, to get out of download mode I press vol. down and power keys at the same time and the phone turn off. Then I turn on the phone into recovery mode, once in there I swipe into write mode and go to Wipe and select Format Data, type down yes and it says it's done. I go back to TWRP main menu.
4. I connect the cellphone to the PC and in storage I select Mount USB. Then drag the Magisk-v18.0.zip file into the storage that pops up on Windows. Then I saftely remove the device in Windows and go back to the main TWRP menu on the phone. I select Install and install the .zip file without selecting Signature verification or Reboot after is complete. It says is done installing and no errors seems to occur. I employ the button to wipe Cache and Dalvik.
5. I go back again o Wipe and select Format Data, type down yes and it says it's done, again.
5. Then I try to reboot to System, and choose to Do Not Install the TWRP app, and... SUCCESS!! The phone starts again, I config everything and then Magisk is there in the apps. I tried with an app that requires SU and it works!
Thanks for the help.
Click to expand...
Click to collapse
For the files and details check the OP on that thread.

LordBaal19 said:
Found a way:
For the files and details check the OP on that thread.
Click to expand...
Click to collapse
That's the way I have done it. But if you go on Z3X, select the device (SM-G610M), and you perform some activity like repair IMEI, Z3X detects the root, but it does not detect the Super User.

CWM recovery for SM-J330F

Code:
I am not responsible for any damage this guide does to your device/home/life
This is just initial port from J5 Prime. Works on SM-J330F (don't know what about FN/G etc.). Odin flashable. For almost 100% it will trig KNOX. Remember to OEM unlock your device before flashing.
Code:
https://drive.google.com/open?id=0B9RMM9XshmDbSU9sTmNCaXVndVU
1) OEM unlock your device
2) Reboot into download mode
3) Flash recovery through Odin
4) Reboot into CWM recovery and do factory reset
Voila! Now you can easily root your device.

Is a factory reset really necessary?

J0_on said:
Is a factory reset really necessary?
Click to expand...
Click to collapse
Yes because it gets rid of encryption. It isnt good to root an encrypted device.

thepcwiz101 said:
Yes because it gets rid of encryption. It isnt good to root an encrypted device.
Click to expand...
Click to collapse
I get an error that says can't mount data when I try to make a backup, any way to fix that?

J0_on said:
I get an error that says can't mount data when I try to make a backup, any way to fix that?
Click to expand...
Click to collapse
Currently idk but flashing back to stock is the only thing you can do. edit: i cant fix that as i do not own this device.

CWM recovery? Really...

sm-j330 fn this procedure DONT WORK

Classified00 said:
Code:
I am not responsible for any damage this guide does to your device/home/life
This is just initial port from J5 Prime. Works on SM-J330F (don't know what about FN/G etc.). Odin flashable. For almost 100% it will trig KNOX. Remember to OEM unlock your device before flashing.
Code:
https://drive.google.com/open?id=0B9RMM9XshmDbSU9sTmNCaXVndVU
1) OEM unlock your device
2) Reboot into download mode
3) Flash recovery through Odin
4) Reboot into CWM recovery and do factory reset
Voila! Now you can easily root your device.
Click to expand...
Click to collapse
NOT WORK

j330F Custom Recovery TWRP 3.1.1
flash by Odin, also Unchek Auto Reboot Option befor Flash,then restart by vol down+power and go to recovery mode by vol up+power+home
work only with Mouse via OTG cable !
Data not mount and for mount data or backup it must Format Data first via TWRP menu !
Warning!!!Befor Flash this Custom Recovery, you Must Enable OEM Unlock on Developer Options Menu !
download:
https://forum.xda-developers.com/showpost.php?p=74544646&postcount=156
---------- Post added at 16:51 ---------- Previous post was at 16:50 ----------
j330f improvement patch​flash via TWRP, after flash increase Camera picture quality, can record call conversion,add LTE only on network connection,disable and enable camera shutter sound...
download:
https://forum.xda-developers.com/showpost.php?p=74544698&postcount=157

How to Root Exynos Note 8 (Pie)

Hello,
I tried to root my Note 8. However, after flashing TWRP in Download Mode with Odin I can't get into TWRP with Vol + | Bixby-Button | Power Button. Only way out is to press Vol - and Power and reboot the phone. What am I doing wrong? USB-Debugging is on etc. Odin says it's a success. Is there any other way to root it?
I'm using an Stock Rom Pie 9 with an international Note 8.
Thanks
Kind regards
Hugo

hugo1322123 said:
Hello,
I tried to root my Note 8. However, after flashing TWRP in Download Mode with Odin I can't get into TWRP with Vol + | Bixby-Button | Power Button. Only way out is to press Vol - and Power and reboot the phone. What am I doing wrong? USB-Debugging is on etc. Odin says it's a success. Is there any other way to root it?
I'm using an Stock Rom Pie 9 with an international Note 8.
Thanks
Kind regards
Hugo
Click to expand...
Click to collapse
Press vol- and power to reboot the phone, the moment it goes in blank screen for rebooting, press vol+ bixby power..
It ll go to recovery

its_me_Sandy said:
Press vol- and power to reboot the phone, the moment it goes in blank screen for rebooting, press vol+ bixby power..
It ll go to recovery
Click to expand...
Click to collapse
do i need to flash anything after flashing the twrp from odin? and is it very important to clear data after installing twrp?

galaxtnote2 said:
do i need to flash anything after flashing the twrp from odin? and is it very important to clear data after installing twrp?
Click to expand...
Click to collapse
To get root, you need to flash twrp via odin, now to access/mount the data you need to remove the encryption (i.e format data and internal storage) and then flash magisk from within twrp..

its_me_Sandy said:
To get root, you need to flash twrp via odin, now to access/mount the data you need to remove the encryption (i.e format data and internal storage) and then flash magisk from within twrp..
Click to expand...
Click to collapse
and thats all? nothing to flash encrypt etc?

galaxtnote2 said:
and thats all? nothing to flash encrypt etc?
Click to expand...
Click to collapse
You'll have to disable FDE if you've enabled it yes. But normally by default it doesn't affect much. What you need to get is just some 9.0 Sources for the Exynos variant, and you should be able to make a custom recovery image from the Samsung Open Source SRC's and the AOSP code.
Even if you have to downgrade to Oreo first to flash it, TWRP will be able to get you back to Pie with TWRP still installed.