There were no changes for URSA Mini Pro between 4.5 and 4.8. This means that using 4.7, 4.7.1 will say that 4.5 is up to date for the Pro. If you have a look at the release notes the only versions that have changes for the Pro are 4.5, 4.8 and 4.9.
What resolution, frame rate and ProRes variety are you recording?