Orbi RBR20

I received a notice that there is a firmware update to the RBR20.  On the Netgear web site it says the most current version is 2.6.1.36.  The current version on the Orbi app is 2.5.1.16 and says the firmware is current.  I've downloaded the 2.6.1.36 and tried to manually update but it says it's not the correct version for the RBR20.  I'm about ready to give up but thought I'd check to see if anyone in the community has a solution.