: Huawei Mobile Connect drivers (ensure the device shows as "3G PC UI Interface" in Device Manager). The File : A compatible usbloader.bin for the E5573s-320. Step-by-Step Guide
: It commands the device to open specific diagnostic and application COM ports on your PC.
: The unlocked or modified .bin firmware matrix you plan to install after the loader successfully runs. Step-by-Step Guide: Making the USBLoader Work e5573s320 usbloaderbin work
Release the short after 2 to 3 seconds. Check your Windows . Under the "Ports (COM & LPT)" section, you should see a single active port named Huawei Mobile Connect - DownLoad Port . 3. Executing the USB Loader File
: A downgraded or modded general firmware (e.g., Huawei_E5573s-320_Firmware_21.110.99.02.00_general ). : Huawei Mobile Connect drivers (ensure the device
Click the or refresh button to verify the tool mirrors the COM port found in your Device Manager.
A specific "boot pin" on the board is shorted to the ground (often the USB metal shield) using tweezers while connecting the device to a PC via USB. : The unlocked or modified
Click the three dots ( ... ) to select your usbloader.bin file.
The usbloader.bin on the E5573s-320 if you have the exact file matching your device’s hardware and bootloader version. However, for most users, you will never need to touch it. Standard firmware updates via the web interface (192.168.8.1) or SD card are safer.