Thanks a lot to both of you, is just that i have some problem to understand 100% what peopel say in english, and im a bit dumb
now everything is marvelous :D

ok, this fixed the problem i had with the blur on the edge, but i still get blur between pixel, and i really have no idea why, i searched everyhere i could on the internet ... maybe im doing something wrong ??

here is an image:
https://ibb.co/e1Pk5H

here is the folder with all the stuff i use :
scan : https://www.virustotal.com/fr/file/b95b73388ab28194ee7f443fe0d189c08a39926da5557fa9968d9d8eee3efd55/analysis/1521649973/
download : http://www.media fire.com/file/27t441wmmg79c1o/MODEL.rar

if i understand, because this is the result from a TGA, i must reduce the size of the UV rectangle ??

i know i'm bad at using this software.
but this time i really don't see why its messing up, i checked the UV map and i carefully limited it to the edge of the pixel i wanted, but somehow the pixel next to the limit is applied to the model surface.

here is how it look like : https://ibb.co/bs2iLH