Supposing it's a substitution cipher, and supposing the alphabet follows the same rules of the previous iteration, I started working on a reduction of the problem, shown here:
It assumes that the flat position is the first, and that the glyphs rotate 45° for every letter. So, "in theory", finding those 4-5 key letters should give us the alphabet to decrypt it all.
Pardon the rough mouse drawings, trying to update you guys as I go…