i think i have another prestashop web which friendly url is working from the beginning (i just try switch on/off it)
then i copy paste and edit .htaccess file from my other web which it friendly url is working
here is the .htaccess file http://pastebin.com/rQGmVWes
backup original file before copy paste
btw im using 1.6.0.14 version
sory for my english grammar