The usbloader.bin file is essentially a bootloader exploit. It allows you to temporarily flash custom firmware, enable factory mode (WebUI 192.168.8.1/html/index.html ), or unbrick your E5573s-320 without needing a full firmware reflash via DC-Unlocker.
The usbloader.bin is an emergency boot file that allows a computer to communicate with the Huawei E5573s-320's e5573s320 usbloaderbin work
By the end of this guide, you will fully understand how to get the file working on your E5573s-320. The usbloader