TWRP Device Tree for Honor 50 SE (JLH-AN00)

Device Information

• Device Name: Honor 50 SE
• Model: JLH-AN00
• Platform: MediaTek MT6877 (Dimensity 900)
• CPU: 6x Cortex-A55 @ 2.0GHz + 2x Cortex-A76 @ 2.0GHz
• GPU: Mali-G57
• Display: 6.67" FHD+ (2400x1080) 120Hz LCD
• Storage: UFS
• RAM: 8GB
• Battery: 4000mAh

Features

• Basic TWRP support
• Touchscreen support (NT36672)
• Display support (DSI LCD)
• USB debugging (MTP/ADB)
• Backup/restore functionality
• FBE (File-Based Encryption) support
• F2FS filesystem support

Prebuilt Files Required

Before building, you need to place the following prebuilt files:

prebuilt/
├── kernel          # Prebuilt kernel Image.gz-dtb
└── dtb/
    └── mt6877-jlh-an00.dtb  # Device tree blob

Getting Prebuilt Files

1. Extract from stock boot.img:

   • Use magiskboot or similar tools to extract from stock ROM
   • Extract kernel and dtb from boot.img

2. Build from source:

   • Use the provided kernel source from Honor
   • Compile with jhld defconfig

Building

Prerequisites

• Android 11+ source tree
• TWRP source tree
• Proper build environment

Build Steps

1. Clone TWRP source:

   git clone https://github.com/minimal-manifest-twrp/platform_manifest_twrp_aosp.git -b twrp-11
   cd platform_manifest_twrp_aosp
   repo sync

2. Copy device tree:

   cp -r twrp_jlh_an00 device/honor/jlhs

3. Place prebuilt files:

   mkdir -p device/honor/jlhs/prebuilt/dtb
   # Copy your prebuilt kernel and dtb here

4. Build:

   source build/envsetup.sh
   lunch twrp_jlhs-eng
   mka recoveryimage

5. Output:

   • Recovery image: out/target/product/jlhs/recovery.img

Flashing

Method 1: Fastboot (if bootloader unlocked)

fastboot flash recovery recovery.img
fastboot reboot recovery

Method 2: SP Flash Tool (if bootloader locked)

1. Download SP Flash Tool
2. Load scatter file from stock ROM
3. Load recovery.img to recovery partition
4. Flash

Partition Layout

/dev/block/by-name/boot        (64MB)   - Boot kernel
/dev/block/by-name/recovery    (64MB)   - Recovery kernel
/dev/block/by-name/dtbo        (4MB)    - Device tree overlay
/dev/block/by-name/super       (8.5GB)  - Super partition (dynamic partitions)
/dev/block/by-name/userdata    (110GB+) - User data
/dev/block/by-name/metadata    (16MB)   - Metadata for FBE
/dev/block/by-name/persist     (8MB)    - Persistent data
/dev/block/by-name/nvdata      (32MB)   - Calibration data

Known Issues

• SELinux may not be enforcing (set to permissive)
• Some TWRP features may not work properly
• OTA updates may fail
• Decryption may not work for all variants

Troubleshooting

Bootloop

• Check kernel configuration
• Verify DTB matches device variant
• Check ramdisk files

Touchscreen not working

• Verify touchscreen driver is included
• Check GPIO and interrupt configurations
• Ensure proper DTB bindings

Display issues

• Check display resolution in BoardConfig.mk
• Verify framebuffer pixel format
• Check DSI configuration

Decryption fails

• Ensure proper keymaster version
• Check FBE configuration
• Verify security patch level

Source Reference

This device tree is based on:

• Honor 50 SE (JLH-AN00) kernel source
• MediaTek MT6877 reference design
• Common TWRP MediaTek device trees

Credits

• Honor for releasing kernel source
• TWRP Team for recovery implementation
• MediaTek for platform documentation

License

This device tree is provided as-is for educational purposes. Use at your own risk. No warranty is provided.

Support

For issues and questions:

• Check XDA Developers forum
• Review kernel logs (dmesg)
• Verify partition layout with cat /proc/partitions

Notes

• This is a basic device tree - additional features may require further development
• Bootloader unlocking is required for fastboot flashing
• Always backup your data before flashing recovery
• Stock recovery flashing may cause boot issues if not done correctly