To understand the popularity of this tool, one must understand the market of the early 2010s. Telecom companies subsidized USB modems to get users on their networks. A modem bought from Provider A would reject a SIM card from Provider B. This forced users into expensive roaming charges when traveling or left them stranded with bad reception.
While manufacturers included "unlock code" mechanisms, telecoms rarely handed them out. This gave rise to a grey market of unlock code sellers and, eventually, free software solutions.
| Problem | Likely Cause | Solution | | :--- | :--- | :--- | | "Modem not detected" | Drivers missing or modem in CD-ROM mode. | Install Huawei drivers. Use "Mode Switcher" tool to eject virtual CD-ROM. | | Generated code doesn't work | 1) Wrong algorithm. 2) Modem already unlocked. 3) Counter lock (too many wrong attempts). | Wait 24 hours. Try DC-Unlocker. Do not exceed 5 attempts. | | "No COM port" | Modem is in HiLink (Ethernet) mode. | Switch to NDIS mode or use a USBView utility to toggle mode. | | Virus warning | False positive (the tool uses low-level COM port access). | Add exception in antivirus OR use a Virtual Machine. | | Tool crashes on launch | Missing MSVBVM50.DLL (Visual Basic runtime). | Download and install VB6 runtime libraries. |
Step 1: Install Drivers Ensure your modem is recognized by Windows. Insert the modem → Cancel the auto-run setup → Open Device Manager → Look for "Ports (COM & LPT)" → You should see "Huawei Mobile Connect - 3G Modem (COMx)". Note the COM port number.
Step 2: Disable Mobile Broadband Software Close any dialer software like Mobile Partner, HiLink (web UI), or third-party connection managers. These block direct COM port access. Download Huawei Modem Unlocker V5.8.1b By Bojs Latest
Step 3: Run the Unlocker
Step 4: Generate Code
Step 5: Input the Code
Step 6: Success The modem will reboot. You can now use any SIM card globally. To understand the popularity of this tool, one
Huawei modems use a 16-digit numeric code (or sometimes 8-digit) to remove the SIM lock. This code is generated using a cryptographic algorithm that takes the modem’s IMEI (International Mobile Equipment Identity) as input.
Huawei Modem Unlocker V5.8.1b contains a lookup table and reverse-engineered algorithm (often referred to as the "V1–V3 algorithm") that calculates the correct unlock code instantly.
Example Algorithm Logic (Simplified):
Unlock Code = (IMEI_checksum * known_factor) MOD 10^16
Bojs’ tool automates this process, eliminating human error in manual calculations. Step 1: Install Drivers Ensure your modem is
If your modem does not have a GUI prompt, the tool can send the code directly:
Using the tool felt like a mini-hacking scene from a movie. Users would plug in their Huawei modem, ensure the correct drivers were installed, and run the Bojs software.
The software would scan the device's identifier (IMEI), process it through the known algorithms, and output an 8-digit code. The user would then insert a "foreign" SIM card, a popup would appear on the PC asking for the unlock code, and typing in the Bojs-generated number would permanently free the device.
Warning: Because this tool is free and widely popular, many malicious websites host fake versions containing viruses, adware, or ransomware. Never download from pop-up ads or "Driver Updater" sites.
