Echoplex upgrade

[Roland Eberle <roland@ccnet.com>]

Kim or anyone...

I just acquired a used plex...and on power up the software version shows
3.0
Is there any problem upgrading to the new v 5.0? or do I have to acquire
3.2 first?
Can anyone confirm that Gibson has these upgrades in stock and ready to
ship?

Also..and I know this has been answered before probably but, as far as
upgrading
memory goes...is there any problem using 4x9 (parity) 30 pin simms (60
ns)?
(is it possible for any older device to have architecture too slow to
keep up with
newer faster memory chips?)...Seems like all I can find are these newer
60ns parity chips...about $80 bucks for 16 megs on four simms...is that
a decent price?
will these new fast chips work appreciably better than some older 100 ns
3 chip non parity simms?  I KNOW there must be some used or NOS 30 pin
simms out there
but I aint finding them.
Anyway...TIA

Roland