What is your Mate 8 (e.g., NXT-L29, NXT-AL10)?
If using Fastboot instead of TWRP, run this command from your PC: fastboot flash system your_gsi_image.img Step 6: Format Data and Reboot huawei mate 8 custom rom 2021
If you want a faster, cleaner interface and up-to-date security patches, yes. However, be aware that some features (VoLTE, certain sensors, some camera modes) may not work perfectly. For users who need 100% reliability, staying on stock EMUI might be better. What is your Mate 8 (e