[RECOVERY][UNOFFICIAL] TWRP for Galaxy S20 FE 5G (Snapdragon)

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afaneh92

Senior Member
Jul 31, 2012
3,236
4,811
Hello again. I am able to get it working, but after flashing a ROM (Clean OS), I encounter the error Failed to mount '/system_root' (Invalid argument). I tried rebooting to recovery, but the error persists that I cannot mount /system.
Make sure you are flashing correct twrp r8q and follow all instructions.
 
Make sure you are flashing correct twrp r8q and follow all instructions.
Thank you for your quick reply. Am I supposed to flash Magisk after multidisabler even if I would be installing another ROM?

After typing multidisabler in the terminal, I rebooted to recovery and flashed the ROM, and consequently encountered the issue.
 

afaneh92

Senior Member
Jul 31, 2012
3,236
4,811
Alright. Am I supposed to flash Magisk even if I would be installing another ROM?

After typing multidisabler in the terminal, I rebooted to recovery and flashed the ROM, and consequently encountered the issue.
What rom! If gsi then flash to system not super
Magisk is not necessary.
Its not my problem that you cant flash roms properly and next time add this details. Even if its not supposed to explain how to flash since its twrp thread not rom thread.
 
What rom! If gsi then flash to system not super
Magisk is not necessary.
Its not my problem that you cant flash roms properly and next time add this details. Even if its not supposed to explain how to flash since its twrp thread not rom thread.
I understand. Thank you very much for your assistance, and apologies for going off-topic.

EDIT: I have narrowed down the issue to the ROM itself. I was able to install Magisk and use the recovery successfully.
 
Last edited:

saoudien07

Senior Member
Apr 27, 2016
429
96
Hello,
I know that it is forbidden to ask about Supported Models, by the TWRP/ Root present in this thread, because it is already stipulated on the main page of the thread.
Is there a way to know, from the system, if any of the said model are Bootloader Locked or not??? why?
I finally have the possibility to get a S20 FE 5G, model SM-G781N, and I would like to know before to buy it, if I will be able to Root it.
I am going to get it from a local store, so I want to know from the system if it is Bootloader locked "forever" like the US version or not.
Previously, I bought this phone, and sadly it was a US version, so Bootloader locked "forever".
This time, I would like, while still present in the store, be sure 100%, that it will be Rootable (sure TWRP first), once I get home with it.
I am planning to turn ON the phone a little bit while in the store, and do a little inspection in the system.
Sellers will not allow me to try Root the phone in the store, nor turn it into Download mode, so it would be great, if I may know for sure from the system, about its Bootloader.
Thx you very much.
 
Last edited:

afaneh92

Senior Member
Jul 31, 2012
3,236
4,811
Hello,
I know that it is forbidden to ask about Supported Models, by the TWRP/ Root present in this thread, because it is already stipulated on the main page of the thread.
I would like to know, if there is a way to know, from the system, if any of the said model are Bootloader Locked or not??? why?
I finally have the possibility to get a S20 FE 5G, model SM-G781N, and I would like to know before to buy it, if I will be able to Root it.
I am going to get it from a local store, so I want to know from the system if it is Bootloader locked "forever" like the US version or not.
Previously, I bought this phone, and sadly it was a US version, so Bootloader locked "forever".
This time, I would like, while still present in the store, be sure 100%, that it will be Rootable (sure TWRP first), once I get home with it.
I am planning to turn ON the phone a little bit while in the store, and do a little inspection in the system.
Sellers will not allow me to try Root the phone in the store, nor turn it into Download mode, so it would be great, if I may know for sure from the system, about its Bootloader.
Thx you very much.
N model has oem unlock toggle
 
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saoudien07

Senior Member
Apr 27, 2016
429
96
I installed Magisk.zip through TWRP, but the app never appear on.
Then decided to innstall the apk, and still no Root.
Any idea??
 
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kay9jay

Member
Jul 2, 2010
44
2
I unlocked the bootloader in developer settings and download and also flashed vbmeta_disabled.tar in odin. I CAN flash TWRP, but I need to mash the buttons quickly as stock rom reflashes recovery (I have heard though that TWRP should reflash itself permanently after 1st boot?).

My problems seems to be that TWRP does not see the microsd at all.
I tried mounting it and i tried another microsd (they are both exfat formatted).
The situtation makes it impossible to backup or flash a custom rom. Any help?

I have SM-780G Snap 4G.
 
Last edited:

afaneh92

Senior Member
Jul 31, 2012
3,236
4,811
I unlocked the bootloader in developer settings and download and also flashed vbmeta_disabled.tar in odin. I CAN flash TWRP, but I need to mash the buttons quickly as stock rom reflashes recovery (I have heard though that TWRP should reflash itself permanently after 1st boot?).

My problems seems to be that TWRP does not see the microsd at all.
I tried mounting it and i tried another microsd (they are both exfat formatted).
The situtation makes it impossible to backup or flash a custom rom. Any help?

I have SM-780G Snap 4G.
Its known issue, use internal or usb otg
 

jhr5474

Senior Member
Sep 20, 2010
1,383
464
Holley, Oregon
I am using the snapdtagon s20 fe edition and i have tried following your directions but when i try to flash the vbmeta in odin it fails everytime, any ideas?
 

saoudien07

Senior Member
Apr 27, 2016
429
96
Use latest 24 on Android 12
Thx you, I was used to Magisk 23. My bad
Discovering Magisk 24, and Android 12 hasle
I am using the snapdtagon s20 fe edition and i have tried following your directions but when i try to flash the vbmeta in odin it fails everytime, any ideas?
you wont get any help with such poor details...
for start, is the Bootloader unlocked ? With a Locked Bootloader, you wont be able to do anything...
Did you enable OEM in "Developer Options" ? is "USB Debugging" enabled?
maybe provide a pic of Download Mode, before the error occurs.
 
Last edited:
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jhr5474

Senior Member
Sep 20, 2010
1,383
464
Holley, Oregon
Thx you, I was used to Magisk 23. My bad
Discovering Magisk 24, and Android 12 hasle

you wont get any help with such poor details...
for start, is the Bootloader unlocked ? With a Locked Bootloader, you wont be able to do anything...
Did you enable OEM in "Developer Options" ? is "USB Debugging" enabled?
maybe provide a pic of Download Mode, before the error occurs.
Thx you, I was used to Magisk 23. My bad
Discovering Magisk 24, and Android 12 hasle

you wont get any help with such poor details...
for start, is the Bootloader unlocked ? With a Locked Bootloader, you wont be able to do anything...
Did you enable OEM in "Developer Options" ? is "USB Debugging" enabled?
maybe provide a pic of Download Mode, before the error occurs.
And as I said I followed the directions, so why would my bootloader be locked? Anyways, problem solved. Enjoy, being unhelpful to people.
 

arlequin2k3

Senior Member
Dec 22, 2018
64
11
94450
I unlocked the bootloader in developer settings and download and also flashed vbmeta_disabled.tar in odin. I CAN flash TWRP, but I need to mash the buttons quickly as stock rom reflashes recovery (I have heard though that TWRP should reflash itself permanently after 1st boot?).

My problems seems to be that TWRP does not see the microsd at all.
I tried mounting it and i tried another microsd (they are both exfat formatted).
The situtation makes it impossible to backup or flash a custom rom. Any help?

I have SM-780G Snap 4G.
With the S20FE we can no longer juggle with twrp as we did with the previous phones . So I opted for Swift Backup and it works great to backup all your android on an sd card.
 

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  • 2
    hmm
    updated to twrp-3.6.2_11-7_afaneh92-r8q.tar
    1
    Does it solve my trouble ?
    It doesn't let you spam less
  • 31
    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 S20 FE 5G G7810, G781B, G781N, G781U, G781U1, G981W and G780G (4G).

    US/Canada bootloader unlock thread:
    here

    Download & Guide:
    1. Unlock your bootloader.
    2. Download S20 FE 5G: r8q.
    3. Reboot to download mode and flash vbmeta_disabled.tar in AP slot and reboot. Device will reboot to stock recovery mode prompting you to wipe data so wipe data and reboot to download mode again.
    4. Put the TWRP tar for your device with Odin in the AP slot and click start.
    5. Reboot to recovery via recovery key combo.
    6. Disable encryption:
    Or:
    - 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.​
    7. Go back to Wipe > Format Data > type yes.
    8. Reboot to recovery.
    9. Flash magisk apk in twrp.
    10. Reboot to system, Enjoy.

    Note:
    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

    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.

    Thanks:
    TWRP team
    @ooobs007 for testing on S20 FE 5G G781B
    ianmacd for multidisabler

    Sources:
    Kernel tree
    Device tree
    9
    Changelog:
    02.06.2022 - Update to Android 12 kernel source
    - Fix mount issues
    - Update to TWRP 3.6.2
    29.11.2021 - Update to TWRP 3.6.0
    - Add Symlinked dynamic partitions to fstab
    - Updated to latest kernel source
    - Update multidisabler
    - fstab clean up
    - Fix haptic feedback
    23.05.2021 - Update to latest TWRP source, update kernel to G781BXXU3CUD6.
    03.03.2021 - Update to latest TWRP source, Add terminal multidisabler script. fstab cleanup.
    22.01.2020 - Fix USB-OTG for Q & R builds.
    15.01.2020 - Initial build for Android 11
    31.12.2020 - Update TWRP to 3.5.0
    15.11.2020 - Add TWRP fastbootd support, Move kernel to gz format.
    11.11.2020 - Initial Release.
    7
    @afaneh92 just checking in to ask what if any sources to you want / need to help you ?
    I'm on the Samsung open source site now and downloading a zip for G781BXXU2CUD1 but I've no idea if it's kernel sources inside (280mbs ish). another page I saw here mentioned using the inquiry tab to submit a request.

    if you can tell me exactly what you want I'll more than happily put in a request for it, I'm sure others would too.

    I'll edit this later and add the zip files full name that I've downloaded and if you want that I'll put it mediafire or similar.

    SM-G781B_SEA_RR_Opensource.zip is the archive name, taken from clicking on G781BXXU2CUD1 which matches my current baseband and buildnumberView attachment 5299763
    I will start working on the new kernel source soon.
    4
    @QRCode please consider making a thread about the exact method it required, resources needed and your experience with it.
    this sort of thing will be useful to others. particularly of interest is the features that don't work currently.
    I'll do my best still testing everything compiling my data etc