I have read on a few different posts contradicting information to this one question; can you remove the firmware package off the sd card after the bird and controller is updated or do you need to keep the files on the card?
You can remove the firmware, but DJI suggests keeping it on your memory card so your batteries can be updated if needed. This will become more important as you acquire additional batteries. While formatting your memory card is okay to do, you should not have to do it after installing new firmware.
Right. That's why I prefer to give advice that always works.The reason I say that is I suspect a lot of new pilots come here, learn what they need to and then drift off, they wouldn't necessarily recheck instructions in 6 months time.