: This is the most common cause. If you previously used older software (v1.2.x or below), you must manually uninstall the driver from Device Manager and reinstall the version provided with your current software. A red LED on the device should blink during this process.

Frustration curdled into something colder—suspicion.

Use a dedicated Windows 7 or Windows 10 64-bit laptop with clean installations for tuning tools.

Reconnect the iProg. Right-click the device in Device Manager, choose Update Driver -> Browse my computer for drivers , and point it directly to the Drivers folder located inside your iProg software directory (e.g., FTDI USB Drivers). 3. Windows Operating System Compatibility

The iProg software looks for the device on a specific virtual COM port. If it is assigned too high a number, the software might fail to scan it.

If the test returns "OK" for all voltages but still won't connect to a specific chip, the issue is likely with your adapter or wiring rather than the main unit link. Check the Serial Number and Firmware