If the blog post you saw highlighted "upd" (update), it was likely discussing a rapid patch—perhaps fixing a regression found in Beta 1 or adding support for a specific ISO that wasn't working correctly in the previous build.
If you have been searching for the exact phrase , you are likely looking for a very specific milestone in the history of the popular bootable USB creator. You don’t want the latest version (4.x or 5.x). You want that beta—Rufus 3.16 Beta 2. rufus 316 beta 2 download upd
Fixed ISO mode and BIOS boot issues for various distributions, including Red Hat 8.2+ , Arch , and Ubuntu derivatives. If the blog post you saw highlighted "upd"