Development [RECOVERY][UNOFFICIAL] TWRP for Galaxy A02s (Snapdragon)

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afaneh92

Senior Member
Jul 31, 2012
3,562
5,002
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 A02s A025F, A025M and A025G.

Download & Guide:
1. Unlock your bootloader.
2. Download Galaxy A02s : a02q.
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:
- 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:
https://t.me/twrp_a_m_series

Bugs:
- Encryption not fully working.

Thanks:
TWRP team
@jesec for unlock guide
@ianmacd for multidisabler
@CFKod & @Topser99 for testing

Sources:
Kernel tree
Device tree
 
Last edited:

afaneh92

Senior Member
Jul 31, 2012
3,562
5,002
Changelog:
29.11.2021 - Update to TWRP 3.6.0
- Add Symlinked dynamic partitions to fstab
- Update multidisabler
- fstab clean up
20.06.2021 - Initial Release.
 
Last edited:

alemir25

Member
Jul 1, 2021
8
0
Hello
I disabled the bootloader and AVB. I installed TWRP with the Odin program. Although PASS appears, the stock recovery menu appears instead of the TWRP menu. What is the reason for this?
 

thebestofall007

Senior Member
May 29, 2017
71
20
38
Verizon Samsung Galaxy S5
Moto G7
If you can unlock bootloader why not, but device is lunched with march security update and my unlock service most likely wont work.

If I can unlock the bootloader by going into the developer options and turn on the "oem unlocking" option and then go to the download mode and hold down power+Vol down for 2 secs to enable the unlock option like I have read in the tutorials, that would be swell. I recently returned an sm-a025v verizon variant to Walmart that didn't have that option due to verizon locking the bootloader.

When you mention unlock service, what do you mean and what part of the tutorial do we do that?
 
Last edited:

afaneh92

Senior Member
Jul 31, 2012
3,562
5,002
If I can unlock the bootloader by going into the developer options and turn on the "oem unlocking" option and then go to the download mode and hold down power+Vol down for 2 secs to enable the unlock option like I have read in the tutorials, that would be swell. I recently returned an sm-a025v verizon variant to Walmart that didn't have that option due to verizon locking the bootloader.

When you mention unlock service, what do you mean and what part of the tutorial do we do that?
Yes if you can do that. But you cant on US devices.

 

thebestofall007

Senior Member
May 29, 2017
71
20
38
Verizon Samsung Galaxy S5
Moto G7
Unfortunately it's a US model as afaneh92 said. I returned it and got me a Motorola Moto G power 2021 instead that does have an unlockable bootloader. I wanted to get the models named in this tutorial or an international variant, but there are none that I could find that support CDMA networks like Verizon, which I'm using.
 
Last edited:

afaneh92

Senior Member
Jul 31, 2012
3,562
5,002
Unfortunately it's a US model as afaneh92 said. I returned it and got me a Motorola Moto G power 2021 instead that does have an unlockable bootloader. I wanted to get the models named in this tutorial or an international variant, but there are none that I could find that support CDMA networks like Verizon, which I'm using.
Currently we can unlock any US device with February security update or older, your device shipped with march security update.
 

cater2

Senior Member
Aug 4, 2021
82
23
Samsung Galaxy M12
I managed to root my galaxy A02S . To my surprise, once everything was set up, I didn't have to do anything to pass on SafetyNet. Why ?

Another question is , if I want to go back to stock , would the steps I have to follow be these ?

1) Uninstall Magisk from the app?

2)Then enter Download mode and flash a stock rom ?

Or am I mistaken?

thanks

=====================

solved

Just boot to download mode and flash stock firmware with Odin .
After flashingis done , relock the bootloader...
 
Last edited:

cater2

Senior Member
Aug 4, 2021
82
23
Samsung Galaxy M12
I managed to root my galaxy A02S . To my surprise, once everything was set up, I didn't have to do anything to pass on SafetyNet. Why ?

Another question is , if I want to go back to stock , would the steps I have to follow be these ?

1) Uninstall Magisk from the app?

2)Then enter Download mode and flash a stock rom ?

Or am I mistaken?

thanks
solved

Just boot to download mode and flash stock firmware with Odin .
After flashingis done , relock the bootloader...
 

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    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 A02s A025F, A025M and A025G.

    Download & Guide:
    1. Unlock your bootloader.
    2. Download Galaxy A02s : a02q.
    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:
    - 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:
    https://t.me/twrp_a_m_series

    Bugs:
    - Encryption not fully working.

    Thanks:
    TWRP team
    @jesec for unlock guide
    @ianmacd for multidisabler
    @CFKod & @Topser99 for testing

    Sources:
    Kernel tree
    Device tree
    2
    Works perfectly. Thanks man.
    1
    Hello
    I disabled the bootloader and AVB. I installed TWRP with the Odin program. Although PASS appears, the stock recovery menu appears instead of the TWRP menu. What is the reason for this?
    Need to be quick to enter twrp
    1
    Does anyone know if this method works on the sm-a025m version?

    thanks
    Yes, read OP next time.
    1
    Has anyone knows how to flash android on a physical device SAMSUNG A02S. I downloaded the source from Android website for 64bit version of Android 11 - arm64-eng - ran the compilation with command - m -j4 and now files get into folder out/target/product/generic_arm64 - There is a file system.img , I tried to flash using command fastboot flash system system.img , then phone is in boot loop. What to do with the other files in this folder?
    Do i need a source tree and if yes how can i make it to the phone :/ In one site they said just fastboot flashall -w for flashing but gives me error. command not found and FAILED.
    I thought also for ODIN way but files should be packed in format .tar.md5 and i dont know what to to with all the files in generic_arm64 folder. Someone help ?
    Build as GSI, if not you need to make device tree.
    I cant help you, search on how to make device tree and compile from source on xda guides