We do not provide direct links, but this is the general workflow:

Unlocking the from the Dialog Sri Lanka network allows you to use SIM cards from any provider worldwide. This specific sub-model is known for its high security, often requiring specialized firmware to bypass provider locks. Essential Technical Requirements

: Specifically for firmware version 21.321.03.00.297 . Step-by-Step Unlock Guide

This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later. Unlocking Huawei B310s-925 Firmware Guide | PDF - Scribd The default password is user. Unlocking Huawei B310s-925 Firmware Guide | PDF - Scribd The default password is user.

You will need a Male-to-Male USB cable to connect the router directly to your computer.

My heart is racing. I can’t afford a new router right now.

If you are a Dialog Broadband user in Sri Lanka (or any other region where this specific variant is sold), you have likely hit a frustrating wall. Your router, purchased from Dialog, is network-locked . This means you cannot use a SIM card from another carrier (like Hutch, Mobitel, or Airtel) without first going through a complex unlocking process.

: You will need this to establish a direct connection between your computer and the router's internal motherboard points (if using the USB method).

The is a reliable, high-speed 4G LTE CPE (Customer Premises Equipment) router. It offers excellent coverage, decent data rates, and supports multiple devices simultaneously. However, its primary drawback is the network lock.

If you have a Dialog-branded B310s-925, you have likely stared at the dreaded message: “SIM card is invalid. Please insert a valid SIM from Dialog.” The solution often points to a murky world of “unlock firmware downloads.”

Switch to cheaper data plans or promotional packages from competing networks.

Instead of risking the device with a full firmware flash, the standard unlocking method for the B310s-925 involves two distinct steps:

For many, the easiest path is to either find a professional offering the unlocking service for a small fee (often under $10 USD) or to consider investing in a different router model like the B310s-927 or B311, which support the FDD bands used by most mobile phone providers.

Before you begin, ensure you have the following ready: