This is the IP I got from Firmware Finder :
188.225.84.142
Go into your WiFi network, click "modify network" then change from Dynamic to Static and paste that DNS IP into DNS 1. You can leave DNS 2 IP alone. Once you save and internet reconnected, try going to Huawei Support App and check for update, reboot if needed. I live in USA but I have my region set to United Kingdom.
This is what worked for me. Also, have you tried Firmware Finder with the DNS IP and going into eRecovery mode?
When I was stuck I only actually used Firmware Finder for 1 update which was 10.1.0.123. I got all updates normally afterwards but with the DNS IP still active in my WiFi network. Once I got all updates I changed back to Dynamic for my WiFi network setting.
Let me know if this works for you. Good luck