i ve been reading thru the topics and its a little confusing as to which i should follow. I  have an avic-f900bt im in the USA. id like to upgrade the firmware, i've found topics for this but EU version. could anyone tell me the best way to go about this and what version would be best.

  

Ive modded phones but not decks before i'm sure i can figure it out if there is a topic that cover this id be grateful for a link. also any mods to start of with would be appreciated i'm excited there are options available for this unit its pretty nice just a little dated. i put it in a project  car im building with my daughter I got this deck for 40 bucks i don't think the man selling it realized how nice it was even though it was older.

thanks i'm loving this forum, a lot of information im grateful.