Was Hartmann Schedel in possession of the VMS? I think so.

[JoJo_Jost]

The problem is the regional differences in spelling, which leads directly to a deep exegesis in every attempt at deciphering if you apply Voynich as a simple cipher in Bavarian.

I am not surprised.  It is a more specific version of the same fundamental mistake every expert makes when attacking the VMS.  "The drawings look {European|Bavarian}, so the language must be {European|Bavarian}.  But since a simple alphabet change does not work, it must be some sophisticated cipher."

All the best, --stolfi

No, not because of the images or the marginalia. Because of the structure of the Voynich text, these statistical anomalies, low entropy, frequent repetitions with only slight changes, the small alphabet (in Bavarian, you basically only need about 20 letters, if that) and a rather monosyllabic orientation – all of this fits perfectly with Bavarian (or a similar dialect that was pronounced correspondingly short and probably also written that way at the time). I have examined texts and found that, if written in a slightly less standard form of High German, they show great similarities.

And I'm afraid that's a damning verdict on the possibility of deciphering it. Because there are so many possible interpretations of a cipher that has encrypted the language phonetically, if you don't know the dialect exactly. It's like a jigsaw puzzle with about 12,000 pieces, many of which are just blank....