Thanks for those technical prerequisites for EPUBReader but I would think that a recent version prerequisite is a no-go for the iLiad which relies on a 2.4 Linux kernel. A Kindle, I believe, operates under a 2.6 linux kernel so it may be more plausible.
I haven't heard of nor seen Firefox on the iLiad, but take it from ericshliao's comments here
that it would not be feasible; ericshliao has experience developing on the iLiad!
Perhaps we can revisit this when those who actually tinker with browsers on ebook readers can impart their wisdom; I for one cannot!