If you have previously used the modem on your PC, you likely have the drivers. If not, install the generic Huawei Mobile Partner drivers or the specific drivers for your model. The device must enter for the tool to work.
Are you executing this procedure to or to revive a bricked device ?
Once the loader is successfully "pushed" to the device (usually via a tool like Balong USB Downloader), the modem enters a stable state where it can accept firmware files via fastboot or specialized flashing tools.
Sometimes restarting the PC helps detect the BOOT_3G port properly. Conclusion e5573s320 usbloaderbin work
: To use the loader, you must manually short a specific "boot pin" (test point) on the motherboard to the ground while connecting it to your PC.
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
Before attempting to use a usbloader.bin file, you must ensure you have the following: If you have previously used the modem on
Once the hardware test point is grounded, the modem boots into an emergency download state (often leveraging a specialized bootloader protocol). In this state, the device does not have a fully functioning file system; it only knows how to accept a preliminary RAM initialization file. This is exactly what usbloader.bin does:
I can provide the exact version-matched troubleshooting steps or direct you to the correct driver tools. Share public link
The standard utility for sending the loader to Huawei HiSilicon chipsets. Huawei USB COM Drivers: Are you executing this procedure to or to
Step-by-Step Guide: How to Make E5573s-320 usbloader.bin Work
Required if you need to trigger the Boot Shot (test points). Step-by-Step Recovery Guide 1. Enter "Emergency Download" Mode
However, every advanced user eventually hits the terrifying "Brick Wall"—where the device stops booting, shows only a blinking power light, or refuses to connect to the computer. In these moments, the term becomes the most searched phrase on modding forums.
Now that the loader has opened the "gates," you can run a standard firmware executable ( .exe ) or use a tool like to install a clean version of the E5573s-320 Common Issues & Fixes
A notorious "Error 19" appears when the modem refuses the official firmware. This usually means the usbloader.bin was flashed incorrectly or the boot pin was not released at the right moment. Flashing the loader and upgrading the firmware immediately with is crucial.
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