Cursory testing of this driver with Calibre Portable 629 worked.
However no such luck with Portable 348

No errors displayed but no device detected either.
Kobo Utilities seemed to work fine as well with Portable 629, however no such luck with KoboTouchExtended.
**IDEA**: I see that
KoboTouchExtended defines a new class
KOBOTOUCHEXTENDED that inherits from
KOBOTOUCH. Likewise
KoboTouch348 defines a new class
KOBOTOUCH348 that inherits from
KOBOTOUCH. When I have a chance I'll try changing the inheritance in KTE to inherit from
KOBOTOUCH348 and see if that helps.
Of course this still leaves the question as to why Portable 348 does not work