: This is the most common cause. You may need to manually uninstall the current driver from the Device Manager (where it might appear as an "Other Device" or have a yellow exclamation mark) and reinstall the specific driver provided with your software. Use USB 2.0 Ports : Some iProg+ clones have compatibility issues with
If software fixes fail, inspect the physical unit: iprog programmer not connected new
Ports (COM & LPT) └── iPROG Virtual COM Port (COM3) : This is the most common cause
If the above steps fail, the "new" unit may be defective. the "new" unit may be defective.