Ender 3 E and The GD32F303RET6 Micro Controller by GigoDevice Creality 4.2.2

I have a new Ender 3 E that has a Creality 4.2.2 control board that also has the GigoDevice GD32F303RET6 micro controller. I would like to update to the latest version of Marlin, but I can not find firmware for this later version Creality control board. Any suggestions?