I am trying to update the image on my MiniMad using a Mac. I have downloaded the 8Gb image for my 8Gb card, but when I select the image and the SD card in Balena Etcher, it says the card is too small (see attached image). I have tried removing the partitions and formatting the SD card using the official SD card formatter, but the problem still exists. Balena Etcher says that the image is ~85Mb too big.
What might be causing this issue, and how might it be resolved?