ANSI: https://github.com/gourdo1/gmmkpro-media/raw/main/gmmk_pro_rev1_ansi_gourdo1.bin
ISO: https://github.com/gourdo1/gmmkpro-media/raw/main/gmmk_pro_rev1_iso_gourdo1.bin
Main page readme: https://github.com/gourdo1/qmk_firmware/tree/PR-branch-2023-Q2/keyboards/gmmk/pro/rev1/ansi/keymaps/gourdo1