downgrading your gmmk / gmmk pro

DO AT YOUR OWN RISK

IF YOU BRICK YOUR KEYBOARD I CANNOT HELP YOU

1. download qmk toolbox from https://github.com/qmk/qmk_toolbox/releases and open it
2. download the stock firmware from https://gloriouscore.nyc3.digitaloceanspaces.com/Glorious_Core/%28QMK%29GMMK%20_PRO_US_2021_04_07_V0035_DFU_FW.bin
3. unplug and open up the back of your keyboard
4. hold the physical reset button which is located near the cable connector on the underside of the pcb, and plug in the keyboard
5. if done correctly, your keyboard should be in bootloader mode, which will allow you to flash the keyboard
6. find/open the stock firmware file that you downloaded in step 2, and click flash

DO AT YOUR OWN RISK

IF YOU BRICK YOUR KEYBOARD I CANNOT HELP YOU