Re: Hong Kong SM-P905 with Euro 5.X?
I don't normally reply to myself but it might be helpful to others. My SM-P905 ended up being from Singapore not Hong Kong. With great fear (see PIT/modem comments above) I installed Spain 5.X (France, Germany, and Spain are the newest builds) via Odin. No issues at all and Spain doesn't have a lot of crapware. So I'm a happy camper.
BTW, there's very few "pure" SM-P605 left; there's none on eBay or Amazon. Cool feature is since I'm just using HSPA it allows you to disable 4G which will save a lot of battery. So we now know at least some Asian SM-P605''s can safely use ROMs from other regions.