How to Create AppImage of wxHexEditor 0.24 (or update existing AppImage)

Creating AppImages
1

Hi, here I am. New question.

The authors are not interested in a AppImage versions:

Now thanks to your help, I have this working version:
https://bintray.com/probono/AppImages/wxHexEditor#files

But I did not understand how to do an update version. Sorry for my ignorance.
So I ask for help? How you do it?

2

I have offered my help to the upstream project in the GitHub ticket.