The author remixed this model.
This version has a wider bottom lip, to accommodate the extra width of the official bumper case (https://github.com/emfcamp/badge-2024-addons/tree/main/3d-printable-case). There is also a stand-off on the back to keep everything aligned, and a bit of a longer foot to account for the centre of gravity being slightly more forward. It doesn't work so well if you don't have the bumper, so use the original in that case.