How to Unlock Huawei B311As-853 Router (Test Point Method)
Method:
If your Huawei B311As-853 is locked to a specific network and won't accept other SIM cards, this guide will help you unlock it using the Test Point (USB COM 1.0) method. This allows you to use any network SIM globally.
Preparation & Requirements
Before starting, ensure you have the following:
- USB Cable: A high-quality USB cable to connect the router to your PC.
- Tweezers: To short the Test Point on the motherboard.
- Drivers: Huawei USB COM 1.0 drivers installed on your PC.
- Unlock Files: Download the B311As-853 Firmware file (link below).
- Password for Files:
Step-by-Step Unlocking Process
0. Disassemble the Router
Carefully open the outer casing of your Huawei B311As-853 to access the green motherboard (PCB).
1. Usb Sold
2. Boot into USB COM 1.0 Mode (Test Point)
- Locate the two Test Points on the motherboard
- Use your tweezers to short (connect) these two points together.
- While holding the short, plug the USB cable into your computer.
- Check your PC's Device Manager. If you see "Huawei Mobile Connect - USB Blue" or "USB COM 1.0", you are successfully in Boot Mode.
3. Flash the Loader File
- Open your flashing tool (e.g., Balong USB Downloader).
- Select the Loader file specifically for the B311As-853.
- Click Start to send the loader to the device. The router lights may change or flash.
4. Write the Unlocked Firmware
- Wait for the process to reach 100%. Do not disconnect the cable during this time!
5. Final Reboot
- Disconnect the USB and power off the router.
- Insert a SIM card from a different network.
- Power it on. Your router is now Factory Unlocked!
Download Section
Click the button below to download the required unlocking tools
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