NOOB I have the .bin now what?

downloaded bin for ender 3 4.2.2 how do I get it on the printer?

copy it on an empty microsd card an insert it to printer while printer was turned off after inserting microsd card turn on the printer and whait while firmware update. if you aren’t careful enough you can corrupt boards bootloader and even kill the board.

I think you have to format the microSD card to Fat-32 which has a file limit of 4GB (not a problem) and a partition size limit of 32GB. So don’t want to use a microSD card that is larger or you will only get 32GB and waste the rest as empty space on the card.

Here is a guide: How to Update the Firmware on an Ender 3 – Simple Guide – 3D Printerly