How to Install TWRP Custom Recovery on Samsung Galaxy M12

Unlocking the Bootloader

• 💡 Before starting, back up your data and remove your Google account from the device.
• 🔑 Enable Developer Options by tapping the build number seven times, then activate OEM unlocking.
• ⚠️ To unlock the bootloader, power off the phone, then boot into the blue screen by holding Volume Up and Volume Down and connecting the USB cable.
• Confirm the unlock by pressing Volume Up on the "Unlock bootloader" prompt.
• After the phone restarts, complete a basic setup, skipping Wi-Fi initially, then connect to Wi-Fi and verify that OEM unlocking is now grayed out in Developer Options.

Preparing for Flash

• 💻 On your PC, download and install Samsung USB drivers and the latest version of Odin.
• 📱 Check your exact phone model (e.g., SM-M127F) and download the appropriate TWRP image and VBMeta file.
• ⚠️ Restart your PC after installing the Samsung drivers.

Flashing TWRP with Odin

• 🔌 Turn off the phone and boot into Download Mode by holding Volume Down and Volume Up while connecting the USB cable, then press Volume Up on the blue screen.
• 🖱️ In Odin, load the TWRP file into the AP slot and the VBMeta file into the Userdata slot.
• 🚫 Crucially, uncheck "Auto Reboot" in Odin's options.
• ▶️ Click "Start" to flash the TWRP recovery.

Booting into Custom Recovery and Final Steps

• 🔄 To boot into recovery immediately after flashing, power off the phone (hold Power and Volume Down until the screen goes black).
• ⬆️ Then, press and hold Power and Volume Up. Release the Power button when the Samsung logo appears, but continue holding Volume Up until TWRP loads.
• 🧹 Once in TWRP, go to "Wipe", select "Format Data", and type "yes" to confirm.
• 🧼 Optionally, perform an "Advanced Wipe" on Dalvik/Cache.
• 🚀 Finally, reboot to system.