MP 7,1 macOS 11.01.1 RC2 update from 10.15.7. fails because of outdated bridgeOS

[MacFlaX]

Just trying to install macOS 11.01.1 RC2 Public Beta (hopefully identical or close to public release on Nov 12) on Mac Pro 7.1 with 10.15.7 (and upgraded CPU). The installer stops with error message at about remaining 10..12min point. The installation protocol discloses further error details: "the bridgeOS update doesn't satisfy the given minimum requierement.. bridgeOS update prepare fail... bridgeVersion=17.16.16610.0.0.0, minimumVersion=18.16.12561.0.0.0".
How could I force or enable a correct bridgeOS update? Reinstall of 10.15.7 from recovery, SIP on/off and activating all startup security options didn't help so far. I would be thankful for further advice.

 

[MacFlaX]

Looks like a more general problem, not only Mac Pro 7.1 related...

 

[MarkC426]

Why would you
1. Install a beta version when it is released tomorrow.
2. Overwrite your 10.15 install on a Mac Pro (with a beta build).

One major benefit of a Mac Pro is multiple drives.

 

[MacFlaX]

solved - thanks to @matthewadams's post in Big Sur forum