Note this method will delete everything. Make sure you have backup your pictures and whatapp massage. (I m not responsible if anything goes wrong, but i can help you get out if that problem)
For me The method:
1.Install HiSuite
2.Install Firmware Finder from google play
3.Find the firmware that is compatible with your phone by pressing check availability(BE SURE TO SELECT THE "FULL-OTA-MF" NOT JUST THE "OTA")
4.Go to Hosts and add: "188.225.84.142 query.hicloud.com"
5.Check your phone to be connected to the laptop hotspot and register your firmware
6.Connect the phone to pc and open HiSuite and press update
The connection to the laptop hotspot is recommend to avoid another problems.
All method attached
https://huaweiflash.com/how-to-flash-huawei-stock-firmware-all-methods/