Since the Nova 7i supports (Android 10+ vendor partition), you can flash AOSP-based GSIs :
Once you have an unlocked bootloader and TWRP installed, follow this generic guide. Specific commands vary by ROM; always read the ROM thread's "Installation Instructions." custom rom for huawei nova 7i
📌 Stick with EMUI 10/12 optimizations, or consider moving to a more developer-friendly device (Xiaomi, OnePlus, Google Pixel) for custom ROM experience. Since the Nova 7i supports (Android 10+ vendor