Warning: If you download from random pop-up ads or unmoderated sites, assume the file may be infected with a Trojan or RAT.
Because the official distribution site changes frequently (often hosted on forums like GSM-Forum, UnlockTool, or 4pda), you should follow a cautious download process:
Step 1: Install Drivers
Before opening the tool, install the appropriate drivers for your MiFi device. The tool package may include a Drivers folder. Run DriverInstaller.exe as Administrator. Mifi Tool V1.4.0.0.exe Download
Step 2: Connect Your MiFi Device
Step 3: Run Mifi Tool V1.4.0.0.exe
Step 4: Detect the Device
Step 5: Perform the Unlock/Flash
Step 6: Reboot and Test
Before using Mifi Tool V1.4.0.0.exe, understand this: Warning: If you download from random pop-up ads
Always back up the original firmware and keep purchase receipts for your device to prove ownership.