OnePlus Android 14 with OxygenOS 14 init_boot.img (GKI 2.0)

How to root the OnePlus 12, OnePlus 12R & OnePlus Open with Magisk

Complete Fastboot rooting tutorial for OnePlus 12, OnePlus 12R, and OnePlus Open foldable on OxygenOS 14 and 15. Explains payload.bin init_boot extraction, Fastboot commands, and OTA survival.

At a glance

Device familyOnePlus 12, OnePlus 12R & OnePlus Open
Launch softwareAndroid 14 with OxygenOS 14 (Upgradeable to OxygenOS 15)
ChipsetQualcomm Snapdragon 8 Gen 3 / Snapdragon 8 Gen 2
Root partitioninit_boot.img (inside payload.bin)
Firmware formatOfficial Full OTA Zip containing payload.bin
Bootloader unlockDeveloper Options OEM Unlock -> Fastboot (`fastboot flashing unlock`)
Warranty / security impactUnlocking the bootloader wipes user data and may disable some hardware-backed features. It can usually be re-locked and re-flashed to stock.

Rooting method

  1. Step 1. Download the stock firmware or factory image that matches your exact build (Official Full OTA Zip containing payload.bin).
  2. Step 2. Extract init_boot.img from the package.
  3. Step 3. Copy init_boot.img to the phone, open the Magisk app, tap Install → Select and Patch a File and choose it. Magisk writes magisk_patched.img to your Download folder.
  4. Step 4. Copy the patched image back to your computer.
  5. Step 5. Reboot to the bootloader and flash it, then reboot the device.
Flash command
fastboot flash init_boot magisk_patched.img fastboot reboot

For the full workflow and prerequisites, see the installation guide and boot image patching guide.

If the device bootloops

Recovery

Hold Power + Vol Down -> Fastboot -> fastboot flash init_boot stock_init_boot.img

More options: fix a Magisk bootloop.

Keeping root across updates

Magisk App -> Install to Inactive Slot (After OTA) -> Reboot

See the OTA survival guide for the full procedure.

Independently written from public upstream documentation. Verify every command against the official Magisk documentation and your exact device firmware before flashing. Not affiliated with the Magisk project.