I think Canon are missing the important issue with this printer. This firmware update is the least of their concerns.
I defected from Epson to this printer because it offered better paper handling and easy matte / gloss changes.
What I didn't figure on though was the apauling quality when printing images with large areas of black.
Canons' semigloss paper was great
Permajet Oyster was great.
Nearly everything else I tried was horrible with visible lines where the head had tracked across the paper.
I had profiles custom made, I tried different paper settings, I tried increasing print times, I tried changing how the chroma optimiser was applied...
After using up much of the ink supplied I finally gave up and went back to Epson. (Horrible paper handling with some papers and costs me every time I change to matte and back - but darn, the prints are pretty...)
Pity because this printer promised so much and I truly wanted to love it. (Images without lots of black were lovely, and if I only wanted to print on Oyster then yey...!)
When I contacted Canon I was met only by feeble attempts at help from a help team who'd never actually seen the printer. Epson are frustrating, but at least their guys know about the printer when you phone.