There are two primary ways to check for and install firmware updates for this device. Before starting, ensure your battery is at least and you have a stable internet connection. 1. Using the Web Interface (Recommended) This is the most direct method for PC or laptop users. HUAWEI 4G Mobile WiFi 3 (E5783) Specifications
Use this if you have downloaded a specific .rar or .zip file from a source like GSM-Firmware or HalabTech . How do I update the firmware version of my HUAWEI router
Log into your router’s web interface (usually 192.168.8.1 ) and go to Settings > System > Device Information . Note down your current software and WebUI versions.