Uninstall the current malfunctioning device from Device Manager.
: Version 1622 is widely considered the most stable for older DS150E/DS100E interfaces. delphi+ds100e+firmware+update+problem+work
If using a specific software version, ensure the firmware folder in your Delphi installation directory contains the correct firmware files for your specific VCI serial number. Delphi FIRMWARE UPDATE FIX tutorial 2023 delphi+ds100e+firmware+update+problem+work
Windows 10/11 often auto-updates USB serial drivers, breaking communication. delphi+ds100e+firmware+update+problem+work