I have 3 new SKR Pro boards with TFT35 screens and have loaded a Bin file created by MPCNC  V1 Engineering for Marlin 3D printers.
They all act differently, and I need instructions to set them all to a fresh start with new flashing firmware.  Then I can see if there are any errors and make corrections.
All are set to 250000 baud,  MPCNC firmware.bin,  SD chip to flash,  2209 Drivers installed,  no end stops connected.  Should I format each chip and flash with a new copy of Marlin?  Does anyone have a simple link of a Bin file?  Thanks for your help.
Rand