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

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physwizz

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Sep 16, 2013
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Sydney
Installing Custom Recoveries Exynos 850

Recommended to use Orange Fox to format and TWRP to install GSIs

1. Install Orange Fox
2. Decrypt the data (Format and run multidisabler twice)
3. Reboot to recovery (not just reboot)
4. Install TWRP recovery.img into recovery partition.
5. Reboot to recovery.


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
(For Pitch-black just install the zip)

Method 2.
1. Download firmware
2. Extract ap file.
3. Patch with special 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. Connect phone to PC
3. Go to Download mode
4. Flash recovery tar into ap with Odin

Part B (You may need to change data partition to ext4 first if format ruins your system)
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

Recovery Problems

Most recovery issues can be solved by attending to the following issues.

1. Did you root using the full ap file patched Magisk .
(This contains the patched boot.img and vbmeta.img)
Exynos 850 users must use the special a217 magisk?

2. Did you then go all the way through the setup process?

3. Did you download the recovery to match your baseband?
See https://t.me/a127f_res/54 fir Exynos 850 recoveries

4. Did you hold down power and volume up after Odin says pass?

5. Did you format data, not just wipe?

6. Did you type multidisabler twice?

7. Did you reboot to recovery by choosing reboot from the menu and then choosing recovery?

8. To avoid touch issues go to settings and untick "allow time out"

@physwizz
 

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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?