So the only stable exclusive is LineageOS 20.
Target Device: Huawei MatePad 10.4 (Kirin 820 / Snapdragon 778G variants – codenames: Agassi, Agassi-W09, Agassi-L09)
For users unable to find a "device-specific" ROM, the MatePad 10.4 relies on Project Treble.
This is the most stable build. It is exclusive because the vendor blobs were manually ported from a Harmony OS 3.0 leak.
Unlike Samsung or Xiaomi, there are no mainstream Custom ROMs (LineageOS, Pixel Experience, crDroid) for this tablet. Here is why and what "exclusive" actually means in this niche.
The term "exclusive" in the context of MatePad ROMs is often a misnomer for "unavailable." Unlike Google Pixel or OnePlus devices, Huawei ceased providing official bootloader unlock codes in 2018.
"I ran LineageOS 20 GSI on my MatePad 10.4 for 2 months. YouTube lagged at 1080p, auto-rotate required a terminal command, and battery drained 30% faster. I reverted to stock HarmonyOS." – XDA user techexplorer
Exclusive Tip: If you absolutely want a custom ROM on a tablet, sell the Huawei and buy a Lenovo Tab P11 Plus or Xiaomi Pad 6. Both have official LineageOS. huawei matepad 104 custom rom exclusive
Last updated: April 2026. No major breakthroughs expected – Huawei's bootloader policy remains unchanged.
Installing an exclusive custom ROM on a Huawei MatePad 10.4 is extremely difficult and generally not possible due to Huawei's strict policy of locking bootloaders without offering an official unlock service. Since 2018, Huawei has prevented the installation of custom versions of Android to maintain security and ecosystem control.
While a "true" custom ROM remains elusive, you can achieve a highly customized experience and access restricted features through these advanced methods: Advanced Customization & System Mods
For "deep" content seekers wanting to move beyond the stock interface, these technical workarounds are the standard alternatives:
ADB Bloatware Removal: You can use Android Debug Bridge (ADB) to uninstall system-level bloatware that cannot be removed via the standard settings menu. This can free up RAM and improve performance, especially on the 4GB RAM models.
GSpace & GBox for Google Services: Since native Google Mobile Services (GMS) are missing, power users use tools like GSpace or GBox found in the Huawei App Gallery to "sandboxing" Google apps like the Play Store, YouTube, and Maps.
HarmonyOS Desktop Mode: For a "custom OS" feel, the built-in Desktop Mode transforms the UI into a Windows-like environment, which is highly effective when paired with a Bluetooth mouse and keyboard for productivity. So the only stable exclusive is LineageOS 20
Third-Party App Stores: For apps not in the official gallery, many enthusiasts use the Aurora Store or APKPure to find versions of software that typically require GMS. Performance Comparison: Kirin 820 vs. 710A
If you are looking for the best performance "exclusive" to specific hardware versions, ensure you have the right model: Kirin 820 (BAH3-W09)
: This is the high-performance model, offering roughly 80% faster CPU speeds and six times better GPU performance than the alternative, making it the only choice for smooth 3D gaming. Kirin 710A (BAH4-W09)
: Primarily designed for media consumption and light multitasking; it may struggle with heavy apps. Visual Content and Reviews
For a deeper dive into the tablet's capabilities, you can find expert reviews and guides on platforms like XDA Forums which host discussions on mods and workarounds.
While there is significant interest in installing custom ROMs on the Huawei MatePad 10.4
to regain Google services or customize the user experience, "exclusive" development for this specific device is extremely rare and complex due to strict manufacturer limitations. The Core Obstacle: Bootloader Locking The primary barrier to custom ROM development for the MatePad 10.4 Target Device: Huawei MatePad 10
is Huawei's decision to stop providing bootloader unlock codes as of mid-2018.
Official Stance: Huawei no longer officially supports bootloader unlocking on its newer devices.
Third-Party Workarounds: Some users have successfully used tools like DC-Unlocker or Potato Envy for older Kirin-based hardware, but these often require paid licenses or risky "test point" methods involving hardware disassembly.
Impact on Developers: Without an unlocked bootloader, developers cannot flash custom recoveries like TWRP or build stable, device-specific ROMs, leading to a "dead" development scene for many newer Huawei tablets. Current State of Development
Because of the lock, there are no widely available "exclusive" custom ROMs built specifically for the MatePad 10.4
Alternative Ecosystems: Most owners focus on workarounds to run Google apps (GMS) on top of the original HarmonyOS or EMUI. Recommended tools from community discussions on Reddit include GBox, GSpace, and MicroG.
Generic System Images (GSIs): If a user manages to unlock their bootloader, the tablet may theoretically run a GSI (Generic System Image) such as LineageOS or Evolution X, though these are not "exclusive" to the MatePad and often suffer from hardware compatibility issues like broken cameras or styluses.
Specialized Communities: Active research and unofficial support are occasionally shared on the Huawei Developer Forum or XDA Forums, though the latter mainly focuses on older Kirin-era devices. Summary Table: MatePad 10.4 Modification Status Recommendation Bootloader Unlock Blocked (Official) Third-party paid tools (Risk of bricking) Custom Recovery (TWRP) Not available officially Google Apps (GMS) Not native Use GBox or MicroG Custom ROMs None exclusive Use GSIs if bootloader is somehow unlocked
An exclusive custom ROM isn't for the faint of heart. Here is the reality: