When successful, the device will reboot into fastboot mode (VID 18D1, PID D00D).
To flash the loader, you must bypass the software. This requires a physical hardware mod called "boot pin shorting" or "test point" mode.
Uninstall current mobile drivers, restart your PC, and install the verified Huawei_Drivers_2.06 package.
A classic mistake during the "bootshot" phase is losing contact with the test point. The pin must remain securely shorted to the ground until the computer establishes a stable connection and the flashing tool begins its initial handshake. 3. Missing or Crashing Com Port Drivers e5573s320 usbloaderbin work
The E5573s-320 is a popular device worldwide, often sold by carriers like Vodafone, T-Mobile, AT&T, Telstra, and many others. Carriers frequently lock these devices to their SIM cards, preventing you from using local or cheaper SIMs when traveling.
The usbloader.bin file is a minimal, low-level binary payload designed for Huawei devices powered by the Hisilicon Balong chipset architecture.
The term is not an official Huawei filename, but it is widely used in the reverse-engineering and unlocking communities. It refers to a binary blob that is sent to the device’s RAM via USB using tools like fastboot or custom loaders (e.g., balong-usbload or Huawei Multi-Downloader ). When successful, the device will reboot into fastboot
relies on a HiSilicon Balong V7R11 processor. When working normally, the device boots directly from its onboard NAND flash memory. However, if the firmware becomes corrupt or features a locked bootloader (Secure Boot/secuboot), standard flashing tools like Huawei Flash Tool or Balong Flash cannot push new firmware data.
In simple terms, it refers to the process of using a specific binary file (usbloader.bin) to force the E5573s-320 into a recovery or firmware flashing mode via a USB connection. The "work" part of the keyword confirms that a particular method, file version, or procedure successfully accomplishes the intended goal—whether that’s debranding, unlocking, or restoring a dead device.
Because the modem has no fully operational operating system in emergency mode, it cannot accept standard firmware installation packages. The file acts as a temporary, lightweight RAM-injection bootloader. Uninstall current mobile drivers, restart your PC, and
If the file works, the progress bar will fill smoothly, and within a few seconds, the LED lights on the face of the E5573s router will flash briefly or turn a solid color. In Device Manager, the single COM port will often refresh and split into two or three distinct Huawei ports (including an Application Interface and a PC UI Interface ). What to Do Next (Flashing Firmware)
: Some newer firmware versions may block older loaders; ensure your usbloader.bin is the latest version for the s-320. or a specific firmware version for the s-320?