Latest PRI version?

[schettj]

I've never been able to find a good answer to "what the heck is the PRI, and why do I care?"

http://www.justalurker.com/howto.html

Seems to imply that its related to the PRL, and is something like a tiebreaker. However, it seems like (at least for sprint) the PRI is only updated on rom/radio updates, so this might just be a case of acronym overload.

Way back in the mogul days there was some slight change in the PRI about the time sprint enabled agps - if you had the old PRI you'd get crappy sat locks, if you had the newer one, you'd get the "few second agps insta-lock".

So clearly its important. Its just not clear why, or how

Does anyone know exactly what the heck the pri is?