eeprom and sd card on ender 6 not working after th3 update of firmware no recognition of gcode or stl files on machine sd card


Hi I have very limited knowledge of code for 3d printer ender 6 corexy, I was merely trying to update the firmware with a predone version from: TH3D Unified Firmware 2.0 is the latest easy to use firmware for select 3D printers and boards from TH3D Studio. Both 8 bit and 32 bit based machines/boards are supported thanks to being built on Marlin 2.0.9.
Subsequently I have lost the eeprom and the sd card on the machine and it does not recognise any stl files or gcode files on the sd card can anyone please help?

Source: Visual Studio Questions