Huawei Nxtal10 Firmware Link -

: Ensure you are not flashing firmware meant for the global NXT-L29 on your AL10 unless you have specifically rebranded it.

C17 denotes the regional channel (China Unicom/Open Market). If your phone has C00 or C01, do not flash C17 firmware. huawei nxtal10 firmware link

adb shell su dd if=/dev/block/platform/soc.0/f9824900.sdhci/by-name/modemst1 of=/sdcard/modemst1.bin : Ensure you are not flashing firmware meant

This requires and using TWRP recovery to flash the Chinese developer firmware first. huawei nxtal10 firmware link

is often used to "rebrand" international Mate 8 models (like the NXT-L29) to access EMUI 8 (Android 8.0), as Huawei only released that update for Chinese versions.