I still plan to release a guide to replace old textures with updates (logos, helmets, uniforms and field art. Need to figure out the stadiums yet though) in Madden NFL 13 PS Vita/PSTV version. However, it is a lot of work.
Back in
September 2016 I asked for help for this with no real success. Perhaps it would be easier for most of you if I ask for help in the form of a PayPal donation
.
For anyone who wants to help me, just send me a PM here at OS.