Version 2.1.3 of the Commodore 64 Cartridge Dumper command-line client is now available within my Software page. Binaries are available for Windows, macOS (Intel), Linux x86_64 and armv7l.

This is the first publicly available release of the client. Bear in mind that the firmware update option is only relevant to the Pro-Micro based boards. Blue Pill based boards do not support updates via the USB serial port.