This DGK6X code is shared between the ANSI variants of Venus, Hades and Galaxy keyboards.
Instructions for building the Venus, Hades and Galaxy firmware can be found here:
For first Flashing from initial Stock's Firmware
Make a Flash Image's Backup in case you wanted to restore the Keyboard to Stock's Image:
Using dfu-util:
dfu-util --list dfu-util --alt 0 --dfuse-address 0x08000000 --upload ${OLD_STOCK_BIN}
Flash the QMK Firmware Image.
Put board into Bootloader mode, using the same method as when backing up the original Firmware (above)
Here are a few options for performing the initial Flash:
Using dfu-util:
dfu-util --alt 0 --dfuse-address 0x08000000 --download ${NEW_QMK_BIN}
You can short Boot0 to Vdd by shorting R19 to C30 on the sides closest to the processor, as shown:
For repeating Flashing you can use BootMagic:

