It seems my XCN firmware is way behind the latest version.  Pretty sure mine is V1.21.001.51.4

So the question is, can I go straight to V2.6 or do I have to step it up.  And can I just upgrade via GFX750 firmware instead of XCN 1050 firmware - what's the difference?

Also, will the NAV & Auto Guidance firmware need upgrading to suit the new XCN firmware?

Next is Precision IQ firmware .... currently V5.20

Appreciate peoples advice here.