The tool will output two strings: an Unlock Code and a Flash Code . Copy the to a text file; you will need it shortly. Phase B: Execute the Firmware Update

The wizard will detect your modem and display the current firmware version alongside the new target version. Click .

Plug your modem into the PC and open your current connection manager (e.g., Safaricom Broadband, Airtel Internet). Go to and note down your current Firmware Version. If your firmware starts with 11.126.xx , it is highly protected, meaning standard code calculators will not work and a firmware flash is required. Step 2: Generate Your Flash Code

We will use the most reliable method: .

The “unlock firmware” approach is but sometimes necessary for older or heavily locked modems.

Use a trusted Huawei Code Calculator. You input your 15-digit IMEI, and it provides: To unlock the SIM restriction. Flash Code: To authorize firmware updates. Step 3: Flashing the Firmware (If Necessary)

If you are following the code method, you'll need a calculator. Several tools can generate this code:

Ensure the official Huawei drivers or the "Mobile Partner" software is installed so your PC recognizes the modem's COM ports.

Huawei modems require a password/code to authorize firmware updates.

Flashing firmware carries risks. A failed flash can permanently break ("brick") your USB modem. Ensure you complete these preparation steps:

You must prepare specific tools and data before attempting to flash your device. Collect these items to ensure a smooth configuration process.

Flashing incorrect firmware can brick the device. Proceed only if you understand the risks.

Ensure your computer has the latest Huawei drivers installed.

Right-click the downloaded firmware executable file (e.g., E173u-1_Update_11.126.85.00.00.exe ) and choose . Accept the user license agreements and click Next .

Download the official or generic E173u-1 firmware (e.g., version 11.126.85.00.209 or similar). Run the .exe file as an Administrator.

Carriers modify three components in the original Huawei firmware: