: Allows users to temporarily test a SIM card or completely clear the lock permanently.

This tool on modern 4G LTE/5G routers or HiLink modems (such as newer variants of the E5573, B535, or any device requiring a 16-digit unlock code). Trying to force flash or reset modern firmware with legacy tools can permanently brick the device. Step-by-Step Instructions: How to Use the Unlocker

Look at the data window; it should populate your hardware's 15-digit IMEI number and existing lock status. Step 4: Clearing the Restriction

The "Huawei Modem Unlocker" is a piece of software developed by the BOJS team to remove network locks from Huawei modems and mobile WiFi devices (MiFi/pocket WiFi). It works by calculating the unique unlock code (NCK) for your specific device and applying it automatically. The version numbers you might see referenced—like v577, v5.7.7, and v5.8.1b—are all iterations of this core tool, each updated for compatibility and enhanced features.

Permits users to replace carrier-branded connection software with generic user interfaces.

: Many versions of this utility, including those shared by the community, are free to use as an alternative to paid remote unlocking services. How to Use the Huawei Modem Unlocker The unlocking process generally follows these steps:

What is printed under your modem's plastic cover?

If the tool cannot find the modem, open the Windows Device Manager. Ensure the Huawei Mobile Connect ports are active and do not display error flags. Conflict with existing connection managers can also block access; close all carrier software before running the utility.

This tool was generally effective for older 3G and early 4G USB sticks such as: E1550 / E1552 E160 E173 E1750