I've tried everything I could, maybe I just missed something so giving you my suggestions of passwords:
1) GE3IJNSA.jpg or its variations - why not, lol
2) Password somewhere between lines in "ed is one of many, we are many, find them, join us", like on piece 9 puzzle:
http://i.imgur.com/Pkbh4IU.jpg
There's just too often used this phrase in last 2 pieces.
"ed is one of many" could have meaning of "ed = 1 in something called "many"
3) Try to combine somehow already solved pieces: we STILL have this goddamn 8291, now even with Ed repeating it to us, so I tried to combine codes from pieces 8, 2, 9 and 1 (that's XGMA RDHG DF2F C4GD), still without result...
Perhaps some of my thoughts will help you guys to find solution
