How much do these things depend upon USB host mode? My, largely unresearched, impression is that they do. The absence of USB host mode would seem to be the primary reason why people can't get a wired USB keyboard to work with the M96. I haven't followed the T68 (still less the i86) because they are of less interest to me, personally.
Certainly the hardware would seem to be capable of it (its there on the M92). It seems as though it might have been enabled in the earlier firmware, since Booxter posted a video of a keyboard working with it (T68 in the video):
https://www.mobileread.com/forums/sho...d.php?t=242238
But I don't know of any source of the early firmware. The firmware posted on the wiki:
https://wiki.mobileread.com/wiki/Boox_M96
largely post-dates that event and so would seem to be too late. I haven't tried this myself but a number of the people in the thread subsequently attempted to attach a USB keyboard without success.
Does anyone have a copy of earlier M96 firmware (that is, prior to 2014, Jul 21)?