Originally Posted by BWinmill
Here's an idea for the weights of sideloaded fonts. I don't know if it will work since I haven't tried it, but the folks who use sideloaded fonts may want to test it out.
There is a file called .kobo/Kobo/Kobo eReader.conf. I noticed the following line:
Maybe, just maybe, you can try changing Amasis to the name of your sideloaded font and it will change the weight for you.
I tried this but didn't work for me with gentium book, of course I don't know how to interpret this part: Variant(\0\0\0\x87>#\xd7\n)
The strange thing is that sideloaded fonts work with kobo epubs bot not with sideloaded epubs. The standard fonts seem to work fine with both kepubs and sideloaded epubs.