OS6 now works on x86 Legacy WARNING: NO NTGR SUPPORT!

BTW: I found a place for cheap long VGA cable, anyone tried theese? http://www.pccables.com/07129.html

Finally got my cable and for anyone in the US with an Ultra 6 this is a no brainer.
I payed $20 for international shipping, but it was worth it.
The cable is long enough to be permanently installed in the chassis,
just poke out the little metal piece covering the VGA cutout in the metal chassis.

If I load the patched 6.0.4 img in post 3 using FrontView, can I later revert back to 4.2.22 img from the v6 Frontview (or whatever they're calling it in 6) or is this a one way trip?

Yes! It was surprisingly easy! Big shout out to mgdm for modyfying the string in the 4.2.22 image, so READYNAS OS think it is a 6.0.5 upgrade, rather than a downgrade.
The original disks were detected and after a file system check and reboot all was back to normal.
A bit dissapointed that OS6 would not detect the SW RAID set from 4.2 though... (it was building the new xraid, so maybe that was causing it)

Poking around in OS6 for an hour or so, I must say this is the one everyone has been waiting for!
Sure, it is a bit rough in some edges, and there are some design faults IMO, but overall it fixes most gripes people has with RAIDiator...
Given some time, OS6 will be excellent!
I am actually quite ready to do a data migration and factory reset to OS6, but future compability makes me a bit uneasy.

Not supporting OS6 on old units (at least x86) is an idiotic buisness decition. Sure, there are costs, but I guarantee that Netgear will loose a lot of future buisness.
Anyone with half a brain knows that the current series easily will run OS6. So product managers: when your market share starts dropping, look no furter thant the bathroom mirror.

So I have now started in earnest looking for alternatives testing Debian 7, ubuntu and Windows 2012 server.
I must say all of them run smooth, but most of all I am truly impressed with windows 2012 on a dual core 1.66 Mhz Atom with 4 GB RAM.
Since windows does no longer give you the option of creating SW RAID during install, I tried Intel HW RAID, but the RAID set kept failing.
Not sure if it is the old drives I was testing or if it is a HW bug. Anyone knows how to replace the Intel ROM in the BIOS?
Right now I think the best option will be to boot windows from a USB drive and use ReFS on the internal drives.