Well, I was able to locate my needs on Wayback Machine. I successfully downloaded (well, my son did) and now I've got 1.55. Heheh, however, Its good to know I'm updated, but there's no description of what 1.55 does. Anyone know?

Also, were i to upgrade, are the G series processors more desirable sonically and capability-wise than the 568.2mm/HD621 combo?

Thank you for your help.

Meridian 568, Krell KAV 250A2 & 250A3, Oppo BDP 103, M&K 5.1 (S-150 fronts, SS-250 rears, MX-MPS 5410 Pro subwoofer) Sim2 C3Xe PJ, Directv genie