using esp8266 feather to burn bootloader on redboard Is it possible to burn the bootloader of an arduino redboard using an esp8266 feather? whenever i connect my redboard to my pc the ports list on the ide would just be greyed out. I've looked around online and tried everything I found except burning the bootloader since I didnt have a spare arduino, atmega or a programmer. I have an EPS8266 feather though.

If anyone know whether or not this is possible to do and could walk me through on how to do it if it was.
The RedBoard has an FT232 chip for the USB interface.  Flashing the bootloader on the main MCU will have no effect at all on your problem.

While, yes, it is technically possible to use the ESP8266, it's not easy and, since it won't cure your problem of a greyed out port option, isn't worth the effort to try and do it.

Instead, you should be looking at things like your USB ports, USB cables, FT232 drivers, etc on your computer.