For more details see CHANGELOG v0.10
See all commands here https://github.com/hydrabus/hydrafw/wiki/HydraFW-console-commands
See also Wiki Getting Started:
https://github.com/hydrabus/hydrafw/wiki/Getting-Started-with-HydraBus
Latest firmware pre-compiled 07-September-2020 (with windows tools to flash the firmware using USB DFU) is attached see build_HydraFW_v0.10-0-g82fda78_HydraBus_HydraNFC.zip
Release pre-compiled with GCC 4.9.3 20150529 (release) [ARM/embedded-4_9-branch revision 227977]