Cm2 Dongle Manager 1.81 ★ Latest

The 1.81 version includes an updated CM2LicenseServer.exe service that can bridge between IPv4 and IPv6 networks—a feature broken in earlier builds. This allows mixed network environments (legacy machines on IPv4, new workstations on IPv6) to share a single dongle.

Warning: CM2 (Infinity-Box CM2) and its dongle manager are tools used for phone service operations (flashing, unlocking, IMEI repair). Use only on devices you own or with explicit authorization. Improper use can brick devices or violate laws.

Open Device Manager → Universal Serial Bus devices. You should see: cm2 dongle manager 1.81

CM2 Dongle (Interface 0) – Driver version 1.81.0.0

Also, check Services.msc for a running service named "CM2 License Manager" set to Automatic. CM2 Dongle (Interface 0) – Driver version 1

  • Wait for the driver signing prompt. Since version 1.81 includes a Microsoft WHQL-certified driver (valid until 2023), you should not see a warning. If you do, click Install this driver software anyway.
  • After completion, restart your computer – even if not prompted. This ensures the kernel-mode driver loads correctly.
  • After reboot, plug in the CM2 dongle. Windows should automatically detect it and show "CM2 Dongle Manager Device Ready" in the system tray.

    • The CM2 network bridge driver (v1.81) can clash with virtual machine host-only adapters.

    Solution: Re-run the installer, choose Custom, and uncheck "CM2 Virtual Network Adapter". The USB-only mode retains full functionality. Also, check Services

    ⚠️ Note: On modern 64-bit Windows systems, driver signature enforcement may block CM2 drivers. Some users need to disable enforcement or run the manager in a Windows XP virtual machine.

    Using any dongle manager requires security awareness:

    Versions prior to 1.80 frequently crashed on Windows 10 after the 20H2 update due to changes in kernel-mode driver signing. Version 1.81 introduced a signed kernel driver that passes Windows Hardware Quality Labs (WHQL) testing, eliminating the infamous "Code 52" error (unsigned driver).