Hi guys. I'm thinking of buying a new psvita from ebay. The ones i see the most are imports from Japan. Is there any way to find out which factory fw they have from the box? I've seen some models on ebay pch-2000 za22 (glacier white) or za23 (acqua blue) and on this site https://www.vitadevwiki.com/index.php?title=SKU_Models it says that they r manufactured on 2015. Is it safe to buy one of these or it may be new japanese models with fw over 3.60? Thanks in advance.