Success restore but..
Dear Axan, I really had to thank you like a million times for uploading the TWRP backups. I managed to rebrand my Nova 2i into Honor 9i successfully. There's a drawback though; I had unlocked bootloader before and my Huawei Histen (sound algorithm) gone missing afterward, and the headset volume goes really low.
That's when i stumbled upon your post, and got rebranded; also to find Huawei Histen is also missing.
I guess some vendor apps (huawei) will be gone after unlocking bootloader.
But somehow, thank to you, i also learn that to use TWRP backups, the backup file needs to be in directory like this : sdcard\TWRP\backups\(device ID)\backup date\backup file... it took me a while to find that out.