Samsung Galaxy A12 [ SM-A127F ] - GSI Installation Guide

This comprehensive guide will walk you through the process of installing a Generic System Image (GSI) on your Samsung Galaxy A12 [ SM-A127F ].

By following these steps, you can avoid the common pitfalls and issues that many users face during this process.

 

Prerequisites:

• Rooted Samsung Galaxy A12 [SM-A127F/DSN]
• Stock Samsung ROM based on Android 11 DOWNLOAD (SM- A127F_DBT_A127FXXU5AVC5_fac) 
• An healthy and working Data USB cable
• Computer with necessary drivers installed
• Backup of all important data on your device

 

Warning:

• Rooting and installing custom ROMs can void your warranty and potentially brick your device if not done correctly.
• Proceed at your own risk, and make sure to follow each step carefully.

 

Step-by-Step Guide:

 

1. Install Orange Fox Recovery - Orange Fox is a custom recovery that we'll use to perform various operations on your device.

1. Download the Orange Fox Recovery image for Samsung Galaxy A12 - DOWNLOAD (ofox-a127f-u5.tar)
2. Follow the Orange Fox installation guide specific to your device

 

2. Decrypt Data and Format Device

This step is crucial to ensure proper functioning of the custom ROM.

1. Reboot to recovery mode
2. Select "Wipe" option
3. Choose "Format Data" and type "YES" to confirm
4. Go to "Advanced" and select "Terminal"
5. Type `multidisabler` and press enter
6. Repeat the `multidisabler` command

Note: If you encounter an error, use the multidisabler zip file instead.

      You can find it here: multidisabler-samsung-3.1.zip

 

3. Backup Important Partitions

    Before proceeding further, it's essential to create backups:

1. In Orange Fox Recovery, go to the "Backup" section
2. Select the following partitions: Boot, Data, Super
3. Perform the backup and store it in a safe location

 

4. Install TWRP Recovery (Team Win Recovery Project) - Offers more features and better compatibility with some custom ROMs.

1. Reboot to recovery (use the boot menu in Orange Fox, don't just reboot)
2. Flash the TWRP recovery image to the recovery partition. DOWNLOAD (a127f-a127m-twrp-v5.tar) NOTE: Unpack recovery.img to flash via Recovery.
3. Reboot to recovery again to boot into the newly installed TWRP

 

5. Flash Custom Kernel and GSI

1. In TWRP, flash the PhysWizz kernel - This custom kernel can improve performance and add features DOWNLOAD (physwizz_a127f_u5_kernel_v1.zip)
2. Flash your chosen GSI (Generic System Image) - Make sure you've downloaded a compatible GSI for your device 

 

6. Final Steps

1. Wipe cache and dalvik cache in TWRP
2. Reboot your device

 

• If you encounter boot loops, try wiping cache and dalvik cache again
• Ensure you're using the correct versions of all files for your specific device model
• In case of persistent issues, consider reflashing the stock ROM and starting over

 

Conclusion

• Congratulations! You've successfully rooted your Samsung Galaxy A12 and installed a custom GSI.
• Remember that this process requires careful attention to detail. If you're unsure about any step,
• it's always better to research more or ask for help in dedicated Android development forums before proceeding.

Enjoy your newly customized device!