well that turned into a bit more effort than expected.
I was on an early release of the fates image, so ended up needing to use the latest image (due to need a slightly later kernel version).
not that bad, as it now means I’m on the same fates image as everyone else which I meant to do at some point anyway
now, I have the vlc update and eprom update installed.
initially tests are looking good, even under some load (*) its seems to be staying fairly around ~68c,
which is ok.
(*) even when I was compiling stuff… so thats promising
Im going to do a long test, with orac constantly playing for a few hours.
a couple of days ago (prior to these update) when I did this, I saw it rise to about ~80c which is a bit high,
so im just hoping for a few degrees drop, to bring it under 80c , anything else is a bonus 
EDIT: ok, so pretty promising results…
for first 1.5 hours - I had orac running a ‘3 track’ patch, drum, melody, bass with some reverb and other fx. seemed rock steady at ~68c
after than I upped the game I added synths and fx that i know are heavy cpu guzzlers - so took one core to a full 100% - this unsurprisingly push the temp to around ~75c very quickly, but then even after 1.5 hours its was appprox ~77c
this seems pretty good, for an over 3 hours stint, esp. since in reality we cannot push to 100% as we get audio glitches, I think in normal conditions it’ll now stay between 65-75c
(by comparison previous even under lighter loads by 3 hours it was 80-81c)
testing note:
rPI4 - 4gb, small copper heatsinks, inside enclosure
Fates image , running sidekick/orac.
one thing i have noticed, with the latest eprom update, the display no longer turns itself off after shutdown (so its like the rPI3b) - not really and issue, just an observation.
