• Device Model: Samsung Galaxy C9 Pro (SM-C9000 / China Telecom / Netcom)
• Processor / Platform: Qualcomm Snapdragon 653 (MSM8976 Pro)
• Stock OS: Android 6.0.1 Marshmallow / Android 7.1.1 / Android 8.0 Oreo
• Target Recovery: TeamWin Recovery Project (TWRP)
• Status: 100% Tested & Verified Working

Prerequisites & Preparation​

1. Samsung USB Drivers: Download and install official Samsung Mobile USB drivers on your PC.
2. Flashing Utility: Download Odin3 (v3.13.1 or newer).
3. Recovery Tar: Obtain the verified twrp-c9lte-c9000.tar file.
4. CROM Service APK: Critical for China models to unlock the CROM bootloader state.
5. Data Cable: Certified USB Type-C data cable connected directly to a rear PC USB port.
6. Battery Level: Keep device battery charged above 50%.

Step-by-Step Installation Instructions (Nasıl Yüklenir?)​

Step 1: Unlock Bootloader via CROM Service (China Specific)​

1. Ensure the phone is connected to Wi-Fi.
2. Download and install the Samsung CROM Service APK on the device.
3. Open the CROM app and tap to toggle unlock bootloader to ON / Unlocked.
4. Go to Settings > About Phone > Software Information and tap Build Number 7 times to enable Developer Options.
5. Go to Settings > Developer Options and enable OEM Unlocking and USB Debugging.

Step 2: Boot into Samsung Download Mode​

1. Power off the phone completely.
2. Press and hold Volume Down + Home + Power simultaneously until the warning screen appears.
3. Verify that the screen indicates CROM SERVICE: UNLOCK at the top left.
4. Press Volume Up to confirm and enter Download Mode (Odin Mode).

Step 3: Flash TWRP via Odin​

1. Launch Odin3 as Administrator on your PC.
2. Connect your phone via the USB Type-C cable. The ID:COM box will illuminate in blue/yellow.
3. Click the AP (or PDA) button and select the twrp.tar file.
4. Go to the Options tab in Odin:
   
   • Keep F. Reset Time checked.
   • Uncheck Auto Reboot (Essential: Prevents stock Android from automatically overwriting TWRP on the first reboot).
5. Click Start to flash and wait for Odin to display the green PASS! message.

Step 4: First Boot into TWRP Recovery & Format Data​

1. Unplug the USB cable.
2. Force power off the phone by holding Volume Down + Power.
3. The exact instant the screen goes dark, immediately switch fingers and hold Volume Up + Home + Power.
4. Release the buttons once the Samsung logo appears with small recovery text at the top left.
5. The device will boot into the TWRP interface.
6. In TWRP:
   
   • Swipe to allow modifications.
   • Go to Wipe > Format Data, type yes, and confirm (removes dm-verity/forced stock encryption).
   • Flash Magisk.zip or a multidisabler patch via Install to maintain root and prevent stock recovery overwrite.
7. Go to Reboot > System.