How to Patch boot.img with Magisk

Patching a boot.img with Magisk is the most common way to root an Android device. Here’s a step-by-step guide:

---

🔧 What You Need

1. Magisk APK (latest version from GitHub).
2. Your phone’s boot.img (extracted from your stock ROM or firmware).
3. A PC with ADB & Fastboot installed (optional but recommended).
4. USB cable.

---

📌 Steps to Patch boot.img

1. Prepare the boot image

• Extract the stock ROM/firmware you downloaded for your device.
• Locate the boot.img file.

2. Install Magisk

• Rename Magisk-vXX.X.apk → Magisk-vXX.X.apk (don’t unzip).
• Install it on your phone like a normal APK (enable “Install from Unknown Sources”).

3. Copy boot.img to your phone

• Move the boot.img file to your device’s internal storage (e.g., Downloads folder).

4. Patch boot.img with Magisk

1. Open Magisk App.
2. Tap Install → Select and Patch a File.
3. Browse and select your boot.img.
4. Magisk will generate a patched file named something like: magisk_patched-XXXX.img It will be saved in Download folder by default.

5. Copy patched image back to PC

• Transfer magisk_patched-XXXX.img from your phone to your PC.

6. Flash patched boot image

• Reboot your phone into Fastboot/Bootloader mode.
• Connect to PC and run: fastboot flash boot magisk_patched-XXXX.img
• Once done, reboot: fastboot reboot

---

✅ After Reboot

• Open Magisk App → it should show that Magisk is installed.
• You now have root access.

---

⚠️ Important Notes:

• Always use the stock boot.img from your exact firmware version. Wrong version = bootloop.
• Some devices with A/B partitions may require flashing to the correct slot.
• For Samsung devices, the process is slightly different (uses AP.tar instead of boot.img).