Network → DNS → Manual → Primary 1.1.1.1 , Secondary 8.8.8.8 .

: The router becomes completely unresponsive and useless.

Using unverified, free firmware from untrusted sources often results in the router falling into (showing only one bar) or becoming completely unresponsive. Verified firmware ensures: Stable LTE connection: No sudden signal drops.

The procedure was brutal: short two test points on the PCB, boot into forced download mode, flash via TFTP, ignore the “authentication failed” warnings. One wrong move, and the router becomes a paperweight.

: If Windows fails to see the router after shorting the testpoint, you likely lack the correct drivers. Install the "Huawei Handy Drivers" or "Huawei Mobile Connect Driver" package and try again.

The methods for unlocking generally fall into two categories. By far the most common and reliable is installing a generic stock firmware.

: Connect your router to your PC via LAN cable. Ensure the device is powered on and stable.

Release the short after two seconds. Your Windows Device Manager should now show a new device under Ports (COM & LPT), typically labeled as "HUAWEI Mobile Connect - Downloader Port". Step 2: Loading the Temporary Bootloader

“B311s-220_Unlock_V2.Verified.7z – MD5: 4F3A… Tested on firmware 10.0.1.1(H187SP1C983). Removes carrier lock permanently. WebUI remains intact.”

: For devices where the web UI does not prompt for a code, some users utilize tools like Codewriter to communicate with the modem via a USB cable to input the calculation results from an IMEI calculator. Key Device Information Default IP Address 192.168.8.1 Default Login Username: admin , Password: admin (check the bottom sticker) Firmware Updates

Do not disconnect the cable or power down the router. The lights on the router will blink sequentially during this process. Step 4: Flash the WebUI (Optional but Recommended)

She clutched it like a rescued bird. Outside, the trains rumbled. Inside, a small, unlocked piece of the world hummed quietly in her hands.

This means the flashing tool cannot see the router. Double-check your USB cable connection or try switching to a USB 2.0 port instead of a USB 3.0 port.