A12s Exynos 850 Development Afaneh TWRP for a12s (Exynos 850)

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physwizz

Senior Member
Sep 16, 2013
3,593
799
Sydney
Should I try this one? Though my baseband version is u2. Cause previous one didn't work for me.
7. Reboot to recovery.
8. Wipe, format data, type YES.
9. Advanced, terminal.
10.Type multidisabler (twice).
11.Reboot to recovery directly.
12. Flash Magisk for root(only for method 3)
13. Backup boot, data, super and dtbo
 
Last edited:

TheWorldYT

Senior Member
Afaneh TWRP modified by physwizz
For baseband u3 & u4

Download tar file.
Extract recovery.img from tar file

Method 1.
If you have already installed recovery and decrypted.
1. Boot to recovery.
2. Install recovery.img
3. Choose recovery partition
4. Reboot to recovery

Method 2.
1. Download firmware
2. Extract ap file.
3. Patch with magisk
4. Flash with Odin
5. Download recovery.img
6. Install TWRP app
7. Install TWRP
8. Choose file to flash.(don't select device)
9. Select recovery.img.
10. Reboot to recovery.
Go to part B

Method 3.
1. Download recovery tar
2. Download vbmeta disabled tar
3. Connect phone to PC
4. Go to Download mode
5. Flash recovery tar into ap with Odin
6. Flash vbmeta disabled tar into userdata with Odin

Part B
7. Reboot to recovery.
8. Wipe, format data, type YES.
9. Advanced, terminal.
10.Type multidisabler (twice).
11.Reboot to recovery
12. Flash Magisk for root(only for method 3)
13. Backup boot, data, super and dtbo

@physwizz
works but where to flash gsi's in twrp? boot, recovery, optics, prism, super.
 

tonyniu2008

Member
Aug 25, 2021
13
2
New u3/u4 version has been tested and all seems to be working

hi there, i just tried all released versions here, only this version shows the UI, but seems the partition issue remains on this version, i can not even backup or restore, always says no data partition.

could you have a check on that?

baseband
[samsung/a12snsxx/a12s:11/RP1A.200720.012/A127FXXU3AUJ5:user/release-keys]

thanks in advance
 

physwizz

Senior Member
Sep 16, 2013
3,593
799
Sydney
hi there, i just tried all released versions here, only this version shows the UI, but seems the partition issue remains on this version, i can not even backup or restore, always says no data partition.

could you have a check on that?

baseband
[samsung/a12snsxx/a12s:11/RP1A.200720.012/A127FXXU3AUJ5:user/release-keys]

thanks in advance
Did you format data?

My tester had u4 baseband
 

physwizz

Senior Member
Sep 16, 2013
3,593
799
Sydney
Installing a GSI

for a12s(a127f) and m12(m127f)


1. Unzip img file

2.Wipe data from twrp

3. Install IMG into system

4. Install my kernel

5. Reboot


If you need to install GApps

1. Wipe, advanced wipe

2. Select system, repair or change

3. Resize file system

4. Install GApps


GSI list



@physwizz
 

KEMLEP

Member
Aug 30, 2018
38
0
Installing a GSI

for a12s(a127f) and m12(m127f)


1. Unzip img file

2.Wipe data from twrp

3. Install IMG into system

4. Install my kernel

5. Reboot


If you need to install GApps

1. Wipe, advanced wipe

2. Select system, repair or change

3. Resize file system

4. Install GApps


GSI list



@physwizz
For m12 gsi does not work, I tried to install twrp without decryption, the firmware got up through fastboot, but after unlocking the touchscreen did not work and had to reboot, which worked, only after unlocking it stopped working again
 

xilomvos

Member
Nov 29, 2021
16
3
Samsung Galaxy A12
Installing a GSI

for a12s(a127f) and m12(m127f)


1. Unzip img file

2.Wipe data from twrp

3. Install IMG into system

4. Install my kernel

5. Reboot


If you need to install GApps

1. Wipe, advanced wipe

2. Select system, repair or change

3. Resize file system

4. Install GApps


GSI list



@physwizz
how long is first boot supposed to take?
 

xilomvos

Member
Nov 29, 2021
16
3
Samsung Galaxy A12
if i wipe all partitions (dalvik,meta,data,internal,cache,sdcard) and then try to flash gsi to system, should i still be able to boot? or do i have to basically restart?
i have been trying pixel experience plus
 

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  • 2
    Afaneh TWRP modified by physwizz
    For baseband u3 & u4
    Choose u3 or u4 from below

    Download tar file.
    Extract recovery.img from tar file

    Method 1.
    If you have already installed recovery and decrypted.
    1. Boot to recovery.
    2. Install recovery.img
    3. Choose recovery partition
    4. Reboot to recovery

    Method 2.
    1. Download firmware
    2. Extract ap file.
    3. Patch with magisk
    4. Flash with Odin
    5. Download recovery.img
    6. Install TWRP app
    7. Install TWRP
    8. Choose file to flash.(don't select device)
    9. Select recovery.img.
    10. Reboot to recovery.
    Go to part B

    Method 3.
    1. Download recovery tar
    2. Download vbmeta disabled tar
    3. Connect phone to PC
    4. Go to Download mode
    5. Flash recovery tar into ap with Odin
    6. Flash vbmeta disabled tar into userdata with Odin

    Part B
    7. Reboot to recovery.
    8. Wipe, format data, type YES.
    9. Advanced, terminal.
    10.Type multidisabler (twice).
    11.Reboot to recovery
    12. Flash Magisk for root(only for method 3)
    13. Backup boot, data, super and dtbo

    @physwizz
    1
    Well this time a new issue appeared. After step 10, the phone tries to boot into recovery. After the boot logo, the screen goes black. First, I thought the phone turned off itself. But pressing the power button doesn't turn it on again. Interestingly, when I connect the phone to PC, the phone seemed to be on. A device named "SM-127F" (though my phone is SM-127G) was found in "This PC". Running:

    adb devices

    Shows my phone is connected. I think it actually rebooted in recovery, though the screen remains black.

    To get to download mode again, I had to press Power button + Volume down keys to shut it down, then pressed both volume keys.
    same here, but i can go adb shell, and twrp command seems working

    I can wipe, format, all return ok, but flash GSI lineageOS fails, any ideas?
    1
    Contact afaneh here.

    1
    The same thing happened as previous, the screen goes black. I can run all sorts of adb commands. Any thoughts?
    M12 needs its own twrp
    1
    same issue, just curiosity, is that just GUI issue or it is not actually working, can i futher the task by command line?