ive upgrade my stock ender 3 pro wit a 4.2.7 board, cr touch and touch screen which firmware do i need? been told v2 firmware but it doesnt work!
The touchscreen isn’t supported by Marlin as yet - so you’ll be stuck with the stock Creality firmware for that.
thank you someone finally gave me the answer ive been looking for 
I have upgraded my Ender 3 Max to 4.2.7 board and used the Ender 3 V2 display and that works well