ender 3 pro firmware

You don't need to keep the files on the SD card, it's only needed once, to program the microcontroller, then you can delete it.

Why are you trying to flash a new firmware, did you install a BL-Touch or some other upgrade?

Your problem is probably because of the GD32 instead of the more common STM32, which most firmware files were made for.

Try this one: github.com/.../GDF-Ender3bltouchMarlin2.0.8.2-HW-V4.2.2-SW-V2.0.8.zip

thanks for the help. i tried to install a new board which was faulty so i put my original board in. i do not have a bl touch . i install the firmware then delete the bin file. i save a gcode onto an empty sd card and when i power up it is just a blue screen

So you took out your original board, put in a new one, that didn't work, put back the old one? There's no reason to flash firmware again then.

Does everything work if you leave the firmware file on the SD card? 

Maybe something else, other than the controller board is broken, if both of your boards refuse to work?

when i put the sd card in with the firmware it loads i have all the operation. so i shut it down to take out the sd card and go to my computer and through my usb i connect it and delete the bin file. i load up a g code file on a now blank sd card and when i insert the sd card into the printer and turn on the power i am met with a blank screen as a note i have tried a few firmware files. they all  look to load up fine

Well, just keep the firmware on the card then. Maybe something was changed with the boards that have GD chips, and they require the file all the time? No idea, sorry.

do you have a recommendation to what firmware is the correct one, i know creality site is very confusing and out dated. maybe github is a better option

"GD_Ender-3 Pro_HW_V4.2.2_SW_V2.0.8.2" from Creality's website is probably your best bet, if you don't want to manually build Marlin (https://www.creality.com/pages/download-ender-3-pro)

thanks ok i reformatted my sd card and loaded this firmware. for now i will keep it on the sd and see what happens

I've no help to offer, only condolences. Reading your posts stirred memories of a similar experience. Mine was with $100K of Sun hardware. I had a support contract that I finally had to turn to, in order to climb out of the hole. Anyone with seasoned system administration experience has been where you are at.

loaded up andworking with movement and heat now to try a gcode