Icarus 9.7 'Pdf Reader' app and spacing, margins and fonts

Sorry to post here but there is no forum category for Icarus.

I use an Icarus 9.7 eXcel, which is a re-branded Onyx M92 .

My problem is with the handing of epubs. There are three applications for readings epubs but only 'pdf Reader' offers annotation but with only one font and you can't change spacing or margins. The other two offer extra font support, margins and spacing but no annotation!

Is there a patch or some fix so that the Icarus can annotate epubs and change both fonts and margins?

Thanks.