E5573s320 Usbloaderbin Work _best_ – No Password

To get the usbloader.bin working for your Huawei E5573s-320 , you generally need to trigger the device's Download Mode

(often via a "boot shot" or hardware test point) and use a specialized flashing tool like Balong USB Downloader

. This process is typically used to recover bricked devices or unlock them for other networks. Quick Start Guide for usbloader.bin Preparation Download the correct usbloader.bin specifically for the Install the Huawei Mobile Partner

or standalone Huawei COM port drivers so your PC can recognize the modem in its boot state. Download a flashing utility such as Balong USB Downloader (or "Balong Tool"). Trigger Boot Mode (Hardware Method) the device to access the circuit board. Locate the

(test point) and ground it to a metal shield on the board using a wire or tweezers while connecting the USB cable to your PC.

If successful, your PC should detect a new COM port, often labeled as HUAWEI Mobile Connect - DownLoad Port Loading the Binary

Open your flashing tool (e.g., Balong Tool) and select the detected COM port. Click the option to load a file and select your usbloader.bin

Execute the "Load" or "Send" command. The device’s LEDs might change color or flash, indicating it is now ready to accept new firmware or a WebUI update. Important Troubleshooting Unsupported Versions : Some newer firmware versions may block older usbloader.bin files, resulting in errors during the loading process. NVRAM Risks e5573s320 usbloaderbin work

: Standard loaders can sometimes erase unique device data (NVRAM). Using patched utilities like the balong-usbdload on GitHub can help prevent total data loss during emergency recovery.

: If you encounter "Error 19" during a firmware update, it often means the device is not in the correct "Project Mode." Re-running the usbloader.bin via the boot shot method is the standard fix.

Unlocking Huawei E5573: Error 19 Fix | PDF | Booting - Scribd

Here’s a concise, engaging story-style explanation of the E5573s-320 USB Loader.bin process — how it works, what it does, and why it matters for unlocking or debranding that particular 4G mobile WiFi router.

Title: The Silent Flash – Reviving the E5573s-320 via USB Loader.bin

In a small repair shop cluttered with routers and tangled cables, a technician named Mira held a Huawei E5573s-320. It was locked to a carrier — a digital cage.

“No web unlock option,” she muttered. “Firmware update loop.” To get the usbloader

She’d tried every software trick: DC-Unlocker, Balong USB sniffers, even terminal commands. Nothing broke the lock.

Then she remembered the secret path — USB Loader mode.

Unlike normal boot, USB Loader mode bypasses the main firmware. It’s a low-level recovery state where the router expects a special binary: Loader.bin.

This isn’t a full firmware. It’s a tiny, 500 KB handshake — a digital skeleton key.

Here’s what Mira did:

1. Prepared the file – E5573s-320_Loader.bin, extracted from a patched firmware package.
2. Entered USB Loader mode – With the router powered off, she held the reset button while plugging in the USB cable. The LED blinked red/green — loader mode active.
3. Used a flashing tool – balong_flash (Linux) or Huawei Flash Tool (Windows). The command was simple:
   balong_flash -p COM3 -f Loader.bin
4. Execution – The tool sent the binary. The router’s bootROM accepted it, unlocked low-level access, and paused the locked firmware.
5. Result – Once loaded, she could write a generic firmware, change unlock codes, or backup the original flash.

Within minutes, the E5573s-320 rebooted — unlocked, debranded, breathing free.

Why Loader.bin works:
Huawei’s older Balong V7/V9 chips have a hidden USB loader protocol. The official firmware update process uses a signed Loader.bin. But modified loader binaries exist that skip signature checks, giving full flash read/write access — a backdoor for those who know the key. Title: The Silent Flash – Reviving the E5573s-320

The catch:
Wrong Loader.bin = hard brick. No recovery without JTAG.

Moral of the story:
The E5573s-320 isn’t just a locked box — it’s a vault with a secret loader door. But you need the right binary and steady hands to open it.

If you need the actual Loader.bin file or a safe flashing guide for your specific firmware version, let me know.

Q1: Does a working usbloader.bin permanently unlock my E5573s-320?

No. The loader only gives temporary access to flash memory. You still need to change the lock status via NVRAM edits or an unlock code.

2. Injecting the Loader

This is where the specific file comes in. You will use a software tool (typically a command-line tool or a GUI wrapper like Balong USB Download).

• The tool sends the USB Loader Bin to the modem's RAM.
• The modem executes this code and initializes the USB interface in "Download Mode."
• The PC will usually play a "device connected" sound, and the modem will be identified differently (often as a "Huawei Technical" device).

Step 5: Unlocking (If That Was Your Goal)

With the usbloader.bin working, you can now:

• Read the unlock code via AT^CARDLOCK= commands.
• Or flash a patched usbloader.bin that permanently disables SIM lock.

4) Verify loader execution

• If successful, the device may expose a network interface (new DHCP server), a serial console, or accept connections (telnet/SSH) on a specific IP (common: 192.168.8.1 or 192.168.1.1).
• Connect your PC to the device Wi‑Fi or check for new USB/RNDIS network adapter.
• Try pinging 192.168.8.1 or scanning for open ports (22, 23, 80).