Huawei devices have a permanently locked bootloader. There is no official way to unlock it, and most public "cracks" or software-based bypasses do not work on newer Kirin-based tablets like the MatePad 10.4 Lack of Custom ROMs:
Instead of a formal academic paper, you can find deep dives into these technical barriers on platforms like the Huawei Consumer Community and XDA Developers : huawei matepad 104 custom rom cracked
Installing a custom ROM on a Huawei MatePad 10.4 is extremely difficult because Huawei officially stopped providing bootloader unlock codes in 2018. Without an unlocked bootloader, you cannot "crack" the device to install third-party firmware like LineageOS. Huawei devices have a permanently locked bootloader
These files often contain viruses that can steal your personal data or ruin ("brick") your tablet forever. These files often contain viruses that can steal
designed to steal data or charge fees for non-existent software. using ADB instead?
What "cracked" tools exist in the forums (XDA, 4PDA, HuaweiClub)?
Because the MatePad 10.4 uses Project Treble, you can flash a “cracked” GSI. These are generic Android builds made for any device.