KFX plugin seems a windows only 1.
Apologies for what seems silly questions, but I think I will just do the firmware update, this is my only eink device, and don't want to risk stuffing it up just so that maybe I can change a few things.
Happy with it, my eyes thank me and (to me) it's rather amazing to be able to read outside.
I will get used to the margins and line spacing soon enough.
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