Installed the update on both DS bodies.
For each body, I shot a frame while still on v1.02, swapped cards out
to my "update" card, did the update, returned the original card. No
problems with file number counters.
I tested one body a little bit before and after doing the update. It
seems snappier afterwards, focusing is more reliable, and I think
auto exposure seems a tiny bit more accurate ... histograms on four
test images seem a little more where I want them without changing EV
compensation, etc.
So far so good.
Godfrey