@flash
Quoting @kas1e from comments under the news about UP3
"..The only thing some of us may miss there as well, is that in this release we don't have very latest kernel with pegasos2 fixes allowing us to use bridges for HD/RX cards, but that purely because the "team lead of exec-sg" , can't understand that there were a bug on x5k which need to be fixed for 2 years, and at the release of update3 it was too late. So, there is hope for 4.2 which someday may happens..."
Now the question is, what has been improved in the kernel that is in UP3?
I haven't installed UP3 yet. On amiga-news.de, someone posted a link to the changelog
link->
http://mcrebe.de/changelog.html.
There is nothing there about the peg2 kernel.