: It is frequently used for unlocking the device to work with any SIM card or for repairing devices stuck on a "Red Light" or boot loop.
⚠️ Working with "usbloaderbin hot" operations can permanently brick your E5573s-320 if done incorrectly. e5573s320 usbloaderbin hot
: Providing a temporary execution space in the router's hardware memory so that a clean firmware file can be loaded securely. Required Prerequisites & Downloader Tools : It is frequently used for unlocking the
Watch the progress bar; it should complete within 3 to 5 seconds. The device will now change modes internally, prompting the computer to re-detect it under a secondary interface called HUAWEI Mobile Connect - PC UI Interface . Step 4: Flashing the Unlocked Firmware Required Prerequisites & Downloader Tools Watch the progress
| Tool/File | Description | | :--- | :--- | | | Modem drivers (e.g., Huawei Driver 5.05.02.00 ) so your PC recognizes the device. | | Balong USB Downloader | The main tool to flash usbloader.bin to the device. | | usbloader.bin | The bootloader file specific to your model . Using a file for E5573Cs-322 on an E5573s-320 can cause a brick. The 99 version number often indicates it's a service firmware containing the loader. | | Intermediate (Service) Firmware | A specific firmware, like 21.110.99.02.00 , used as a transitional step to prepare the device. | | Final Firmware & WebUI | The stock firmware you want to install, e.g., 21.180.17.00.00 , and a WebUI dashboard package, like E5573s-update-webui-17-100-11-00-03 . | | DC Unlocker (Free Version) | A utility to read device information, send AT commands, and verify unlocks. |
Gently pry open the inner frame to expose the main motherboard.