Development [RECOVERY][UNOFFICIAL] TWRP for Galaxy S21 FE 5G (Snapdragon)

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afaneh92

Senior Member
Jul 31, 2012
3,664
5,098
home.png
backupname.png

Team Win Recovery Project 3.x, or twrp3 for short, is a custom recovery built with ease of use and customization in mind. Its a fully touch driven user interface no more volume rocker or power buttons to mash. The GUI is also fully XML driven and completely theme-able. You can change just about every aspect of the look and feel.

Code:
 * Your warranty is now void.
* I am not responsible for bricked devices, dead SD cards,
* thermonuclear war, or your getting fired because the alarm app failed. Please
* do some research if you have any concerns about features included in this ROM
* before flashing it! YOU are choosing to make these modifications, and if
* you point the finger at me for messing up your device, I will laugh at you.

Supported Models:
Galaxy S21 FE 5G G9900 and G990B.

Download & Guide:
1. Unlock your bootloader.
2. Download S21 FE 5G: r9q.
3. Reboot to download mode
4. Put the TWRP TAR for your device with Odin in the AP slot, vbmeta_disabled_R.tar in USERDATA slot and click start.
5. Reboot to recovery via recovery key combo (Vol up + power + USB connected).
6. Disable encryption:
- Go to Advanced > Terminal, type: multidisabler.​
If vendor complain about free space left on device, will attempt to resize vendor. and it ask to - Run multidisabler again!.​
- Type: multidisabler again. will see - Finished. when done.​
- Go back to Wipe > Format Data > type yes.​
- Reboot to recovery.​
7. Flash magisk apk in twrp.
8. Reboot to system, Enjoy.

Support:
Live support is available via #twrp on Freenode with your IRC client or just click this link.

Telegram group

Bugs:
- Encryption not fully working.
- Haptic feedback is currently not working.

Thanks:
TWRP team
@ianmacd for multidisabler
@Dan_FFM (David Dean) for testing and fix touch

Sources:
Kernel tree
Device tree
 
Last edited:

Doghan13

Senior Member
Mar 13, 2014
57
29
Tested on BVB3 and CVC6 roms, both are working perfect.
On CVC6, wiping data worked and multidisabler seems to be working too. My phone is rebooting and after all data recover I can tell if it done well completely.

Edit : backup is working, install zip is working, to me there is no bug. Just one weird thing, after the update I directly installed TWRP, it worked fine. Then decrypted data and reboot. When finished, I wanted to reboot recovery via Vol Up and power, it always boot up to system, I née needed to reflash TWRP to access it again.
Except this little thing, it works great.
Many many thanks !!
 
Last edited:
How do I unlock my bootloader?
If you bought a US Version, i.e. Carrier brands, you cannot do so, even if you have an unlocked. All US Snapdragon device after like S6 they've kicked us out. If you have a Exnos.
1. Open Settings scroll to about device
2. Tap on Software Information tap build number 5 times to show hidden developer settings.
3. Scroll to you see OEM Unlock.
4. Refer to guides online after step 3
 

Mr NI

Member
Sep 15, 2018
17
3
If you bought a US Version, i.e. Carrier brands, you cannot do so, even if you have an unlocked. All US Snapdragon device after like S6 they've kicked us out. If you have a Exnos.
1. Open Settings scroll to about device
2. Tap on Software Information tap build number 5 times to show hidden developer settings.
3. Scroll to you see OEM Unlock.
4. Refer to guides online after step 3
well isnt that ass
 

icalgoos

Member
Nov 29, 2015
5
0
Tested on BVB3 and CVC6 roms, both are working perfect.
On CVC6, wiping data worked and multidisabler seems to be working too. My phone is rebooting and after all data recover I can tell if it done well completely.

Edit : backup is working, install zip is working, to me there is no bug. Just one weird thing, after the update I directly installed TWRP, it worked fine. Then decrypted data and reboot. When finished, I wanted to reboot recovery via Vol Up and power, it always boot up to system, I née needed to reflash TWRP to access it again.
Except this little thing, it works great.
Many many thanks !!
I am considering buying the smartphone. But the root access ist important for me.

Need you to enter twrp again to have root access after a restart and a connection to pc to enter twrp? I ask because my Galaxy A50 loose after every restart the root access and I need to enter the twrp with a connection to pc to fix it.
 

joke19

Senior Member
Feb 23, 2012
1,516
229
Xiaomi Redmi Note 7
Samsung Galaxy S21
I am considering buying the smartphone. But the root access ist important for me.

Need you to enter twrp again to have root access after a restart and a connection to pc to enter twrp? I ask because my Galaxy A50 loose after every restart the root access and I need to enter the twrp with a connection to pc to fix it.
When you make all right, unlock bootloader, twrp, vb_disabler and then magisk. Then you have a rooted phone with advantages and disadvantages. No loosing after reboot. But no OTA too
 
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Benjamin2557

Senior Member
Oct 6, 2017
236
151
Samsung Galaxy S21 FE
If you are full stock, then disabling vbmeta will trigger a wipe

Just a thought, I have stock ROM october patch and I have Magisk installed properly with Zygisk activated.
I obviously already done a full wipe for this.

If one day I would like to install TWRP, a full wipe will be mandatory ?
I'm asking since I understand that full stock means no Magik installed, which is not my case.
 

afaneh92

Senior Member
Jul 31, 2012
3,664
5,098
Just a thought, I have stock ROM october patch and I have Magisk installed properly with Zygisk activated.
I obviously already done a full wipe for this.

If one day I would like to install TWRP, a full wipe will be mandatory ?
I'm asking since I understand that full stock means no Magik installed, which is not my case.
Yes its mandatory
 

MoveToZero

Member
Sep 25, 2022
14
4
Hello Mohammad,

After rooting I keep getting "ERR_INTEGRITY" errors in logcat, so some apps (especially Samsung ones) don't work properly. Is it normal since you wrote "Encryption not fully working", or am I doing something wrong?

Thank you!
 

afaneh92

Senior Member
Jul 31, 2012
3,664
5,098
Hello Mohammad,

After rooting I keep getting "ERR_INTEGRITY" errors in logcat, so some apps (especially Samsung ones) don't work properly. Is it normal since you wrote "Encryption not fully working", or am I doing something wrong?

Thank you!
Usually because bootloader unlocked, use safetynet fix module.
 

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  • 4
    home.png
    backupname.png

    Team Win Recovery Project 3.x, or twrp3 for short, is a custom recovery built with ease of use and customization in mind. Its a fully touch driven user interface no more volume rocker or power buttons to mash. The GUI is also fully XML driven and completely theme-able. You can change just about every aspect of the look and feel.

    Code:
     * Your warranty is now void.
    * I am not responsible for bricked devices, dead SD cards,
    * thermonuclear war, or your getting fired because the alarm app failed. Please
    * do some research if you have any concerns about features included in this ROM
    * before flashing it! YOU are choosing to make these modifications, and if
    * you point the finger at me for messing up your device, I will laugh at you.

    Supported Models:
    Galaxy S21 FE 5G G9900 and G990B.

    Download & Guide:
    1. Unlock your bootloader.
    2. Download S21 FE 5G: r9q.
    3. Reboot to download mode
    4. Put the TWRP TAR for your device with Odin in the AP slot, vbmeta_disabled_R.tar in USERDATA slot and click start.
    5. Reboot to recovery via recovery key combo (Vol up + power + USB connected).
    6. Disable encryption:
    - Go to Advanced > Terminal, type: multidisabler.​
    If vendor complain about free space left on device, will attempt to resize vendor. and it ask to - Run multidisabler again!.​
    - Type: multidisabler again. will see - Finished. when done.​
    - Go back to Wipe > Format Data > type yes.​
    - Reboot to recovery.​
    7. Flash magisk apk in twrp.
    8. Reboot to system, Enjoy.

    Support:
    Live support is available via #twrp on Freenode with your IRC client or just click this link.

    Telegram group

    Bugs:
    - Encryption not fully working.
    - Haptic feedback is currently not working.

    Thanks:
    TWRP team
    @ianmacd for multidisabler
    @Dan_FFM (David Dean) for testing and fix touch

    Sources:
    Kernel tree
    Device tree
    1
    Changelog:
    01.05.2022 - Initial Release.
    1
    I am considering buying the smartphone. But the root access ist important for me.

    Need you to enter twrp again to have root access after a restart and a connection to pc to enter twrp? I ask because my Galaxy A50 loose after every restart the root access and I need to enter the twrp with a connection to pc to fix it.
    When you make all right, unlock bootloader, twrp, vb_disabler and then magisk. Then you have a rooted phone with advantages and disadvantages. No loosing after reboot. But no OTA too
    1
    how can we update the phone say to OneUI 5.0 in the future and keep root.
    Patch the fw with Magisk, use Magisk install instructions and possibly replace recovery.img with TWRP so that you keep it and flash any multi disabler again that you may have already flashed.
    1
    If you are full stock, then disabling vbmeta will trigger a wipe