Locate the emergency boot pin on the motherboard. For the E5573s series, this is typically a small golden needle-pad located near the micro-USB port.

These tools are powerful but lack the GUI safety nets of the Windows Balong Downloader and are recommended only for developers.

Before attempting to load the binary file, you need a hardware setup and dedicated software utilities. Required Tools & Software

Before attempting to use a usbloader.bin file, you must ensure you have the following:

is built on the . Devices utilizing this architecture feature a hardware-level safety mechanism called "Emergency Boot Mode" (or USB_COM mode).

. It is not a full operating system; rather, it is a temporary loader that resides in the device's RAM. Purpose of the Loader

If successful, the PC should detect a new device, typically as "Huawei Mobile Connect - 3G PC UI Interface" or "USB_COM" in the Device Manager. : Open the Balong USB Downloader as an administrator. Click "Detect" to ensure the COM port is recognized.

Essential for Windows to recognize the chipset when short-circuited.

How to Make the e5573s320 usbloaderbin Work: A Complete Unbricking and Flashing Guide

Once the usbloader.bin successfully runs, it reinitializes the device's ports, turning on the necessary sub-systems so that a full flashing utility ( exe or cmd script) can overwrite the corrupt or locked firmware. Why the E5573s-320 USB Loader Fails to Work

A central component in this process is the file. This article will explain what this file does, how it works, and how it is used to unlock or repair the Huawei E5573s-320 Go to product viewer dialog for this item. What is USBloader.bin for Huawei E5573s-320?

only lights up one LED (usually power) and refuses to connect to Wi-Fi.

the physical "test point" trick to initiate the connection. Confirm the COM port appears in Device Manager. Run your flash tool to fix the modem firmware.

: Flashing this file can sometimes damage the modem’s IMEI or dashboard information, requiring manual repair using AT commands like AT^CIMEI="[Your_IMEI]" .

At its core, the Huawei E5573s-320 runs on the Balong chipset (V2R7, V7R11, or V7R22). usbloader.bin is a low-level emergency USB bootloader file for these Huawei LTE devices. When the main firmware is corrupted or when you need to perform deep-level operations like SIM unlocking or IMEI repair, the standard software update method fails. In these instances, you need a way to force the device into a special emergency download mode.