You may be able to find some minor upgrades/patches
on Aminet, but Ibrowse is currently at 2.2, and I
doubt you'll be able to upgrade from your version
to that and still have a registered version.
I've just plugged in my Amiga (and currently using
it) for the first time since moving house, surprised
something bad didn't happen in transit :-)
Now to get a beta version of IBrowse 2.3, if I can...
(I wonder if it wraps inputted text into text boxes
properly, unlike 2.2... :-))