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To understand why the link fails, one must understand the signal path:
by the 5V USB port. Never connect an external 12V power supply to the iProg+, as it will permanently damage the hardware. 2. Fix Driver Issues
Below it, a single line of text:
Open the Windows Device Manager ( devmgmt.msc ). Under the "Ports (COM & LPT)" section, look for a device labeled "USB-SERIAL CH340 (COMx)" or similar.
Go to the tab and check Run this program as an administrator . Click Apply and launch the program. Prevention Tips iprog programmer not connected link
Pro Tip: Reinstall the drivers provided in the software package, even if you think they are installed. Step 2: Use a Powered USB Hub or Different Port
This is the most critical step.
Troubleshooting iProg Programmer "Not Connected" Link Errors
A "Link Not Connected" error indicates a break in the chain between step 1 and step 3. The software cannot handshake with the USB bridge. To understand why the link fails, one must