No online update available on RBR850 RBS850 + Blue light stuck on 1 Satellite

I have recently bought a set of 1 router and 2 satellites for my home network.

I am still on 4.6.3.16 and none of Orbi management tools (web and app) can find the new firmware to update online...manual update is painful and not user friendly as far as I have read on this very forum.

Come on Netgear, rolling out a FW to all of your customers should not be that difficult...1st disapointment

I have read somehwehere in the release note that the new FW 4.6.8.2 would correct issues of constant blue light on some satellites which is my case on one of my satellites... BTW, this satellite have had some weird behavior (like rebooting in loop ?)  since the begining but since we cant see proper logs of each satellite, it is is difficult to know what is the problem... 2nd disapointment

I bought this very pricey system thinking that this would be an easy solution to manage my home network (around 45 devices connected) in replacement of Google Nest Mesh system which showed some limitations.

Performance wise it is better with around 650 Mb/s down and 400 Mb/s up anywhere in my 3 storeys house (thanks to wifi 6 which is not supported by Nest system btw).

Factory resetting is an easy answer that I am sorry but can't accept given the premium price of this system. It has to work properly straight out of the box and not be so inconsistent in its behavior. My conclusion is that the excellent hardware of this system is limited by poor software development from Netgear.