If you must flash a ROM on this device:
mkdir system_mount sudo mount -o loop system.img system_mount/ Use code with caution.
This is not a full source-built ROM (like Lineage), but a of the official EMUI firmware – designed for daily driver stability with better performance and battery life. huawei mate 7 custom rom repack
With the filesystem mounted, you can begin the customisation process. Ensure you maintain strict file permissions (typically 0644 for files and 0755 for directories) during this phase. Debloating System Applications
However, do not expect modern gaming (Genshin Impact is impossible) or high-end emulation (PSP runs at 80% speed). The repack doesn't add new hardware; it just removes software bottlenecks. If you must flash a ROM on this
Boot into TWRP: Power off, then hold Volume Up + Power button simultaneously.
Overview
Since "Huawei Mate 7" refers to a specific device family (spanning models like the MT7-TL10, MT7-L09, etc.) rather than a single file, a review of "Custom ROM Repacks" for this device requires looking at the community ecosystem that existed around it.
Unofficial builds that bring newer Android versions (like Android 7.1) to the Mate 7, though some features like the fingerprint sensor may vary in stability. Flyme OS Port Ensure you maintain strict file permissions (typically 0644
Perform a clean wipe: Navigate to and select Dalvik / ART Cache, System, Cache, and Data . Do not wipe your External SD card.