Based on release notes from recent Huawei and ISP-signed binaries, here are the concrete changes you can expect from a :

Never update firmware over Wi-Fi. Connect your computer directly to the ONT LAN port using an Ethernet cable.

: Connect a computer to the router via Ethernet or Wi-Fi. Enter 192.168.100.1 192.168.1.1 ) in your browser.

Navigate directly to the Huawei EchoLife EG8141A5 Support Section .

In many cases, once you update to a new version, the router cannot be downgraded to an older one.

Optimizes Wi-Fi throughput and improves the performance of voice (POTS) and video services.