For making file sets for my packages I mount the Raspberry PI 4 firmware image using the native tools within Mac OS and extFsForMac. The latter adds ext file system support.
I rename the .wic file to …img and double click on it and it mounts the boot partition and extFsForMac shows the root partition which I then mount from there.
With v3.60~39, extFsForMac shows what should be the root partition as “Unsupported” and a verify within extFsForMac reports exit code 12 (file system has errors + “operational error”) from fsck. In previous Venus OS versions, the root partition mounts; without errors.
I verified that a previous version of the RPI4 VenusOS version mounts as expected.