Huawei Matepad 104 Custom Rom Install [portable] May 2026

Beyond HarmonyOS: The Ultimate Guide to Installing a Custom ROM on the Huawei MatePad 10.4

Disclaimer: Installing a custom ROM involves unlocking the bootloader, which voids your warranty. It carries risks including permanent bricking (rendering the device unusable), data loss, and security vulnerabilities. This guide is for educational purposes. The author and platform are not responsible for any damage to your device. Proceed only if you understand the risks.

Introduction

Installing a custom ROM on the Huawei MatePad 10.4 is not a task for the faint of heart. Unlike Xiaomi or Samsung devices, where unlocking the bootloader is a straightforward (though sometimes data-wiping) process, Huawei has implemented a strict closed-door policy regarding software modification since the US trade ban.

This review covers the feasibility, process, and outcome of attempting to de-Google or de-Huawei the MatePad 10.4, specifically focusing on the hurdles users face in 2024.

3. Step-by-Step Installation Guide (For Unlocked Bootloader Only)

Prerequisites:

• Unlocked bootloader (unlock code obtained).
• PC with ADB & Fastboot installed.
• Downloaded GSI image (e.g., from AndyYan’s LineageOS GSI builds – select “arm64_bgN”).
• USB debugging enabled on the tablet.

Steps:

1. Boot into Fastboot Mode
   Power off the tablet, then press and hold Volume Down + Power until you see the fastboot screen.

2. Unlock Bootloader (if not already)

   fastboot oem unlock [your_unlock_code]
   

   Warning: This wipes all user data.

3. Flash the GSI

   fastboot erase system
   fastboot flash system [gsi_filename].img
   fastboot -w  # Wipes userdata to avoid bootloops
   

4. Reboot

   fastboot reboot
   

   First boot may take 5–10 minutes.

Step 1: Unlock the Bootloader (The Hard Part)

Since Huawei won't help you, here is the general method using DC-Unlocker (example, as tools change frequently):

1. Install DC-Unlocker on your PC.
2. Put the MatePad into Fastboot Mode (Power + Volume Down).
3. Connect to PC. DC-Unlocker will read the bootloader code.
4. Purchase credits (~4 credits). The software generates a unique unlock code.
5. In command prompt:
   fastboot oem unlock [YOUR_CODE]
fastboot flashing unlock

If you see "FAILED (remote: 'flashing unlock is not allowed')" – you are done. Return the tablet. huawei matepad 104 custom rom install

Part 3: Step-by-Step – The Actual Installation Process

Disclaimer: This process voids your warranty, breaks Widevine L1 (Netflix in HD), and may brick your device if done incorrectly. Proceed at your own risk.

Issue 1: No Sound or Low Volume

• Fix: Install phh Treble Settings app (comes with phhusson’s ROM). Go to Qualcomm features (even for Kirin) and toggle “Use alternate audio policy” or “Disable audio effects”.