I'm looking for difinitive answers on a couple questions as well as page references in the rule books - Can you cast a higher level spell via a scroll? If so, what's the DC to pull it off? So far the only reference I've seen is making a Use Magic Device(UMD) check (p. 109 Core Rulebook), though it seems rather high, especially if you're trying to cast a spell from your list X levels higher than you. I've also seen arguments in other threads that the DC is 5 (though no reference to back it up) as well as saying it simply cannot be done.
In addition, what if the DC roll fails, is the person simply not able to use the scroll or do we get into the mishap rules?
Final question on this topic, from what I understand according to the UMD rules any spellcaster can cast ANY spell (arcane or divine) from a scroll so long as they beat the UMD DC, is that correct? If so, does it make a difference if the spell requires M or F components or was that included in making the scroll? For example, Wreath of Blades (UC) requires four mithral daggers, each worth at least 502 gp each.