I also had a whole range of different firmware versions but was not getting any prompt to update firmware (but my mission planning tools were not working correctly). I had to download the firmware from the website, save it to the SD card, and then it installed when the E2P was turned on ( as described here: https://youtu.be/0kHS6LE7Zi4?t=47). Evan at Autel was very helpful. And now my waypoint missions actually take photos......