Handshaking... Error Unexpected Response 0x68 Best < FREE × METHOD >

If possible, try establishing the connection using a different tool or client. This can help determine if the issue is specific to one client or if it's a more widespread problem.

Hardware handshaking requires specific pins (typically pin 7 RTS, pin 8 CTS on DB9 connectors). Here’s the trap: If your software is configured for but your cable lacks those wires, the receiving device may power up with its CTS line low (inactive). Your computer waits. The device sends data anyway. That data starts with 0x68 . handshaking... error unexpected response 0x68