hi i need some help to git my galaxy s3 back to stock rom i am trying to flash with odin but am gitting a message that says Md5 hash value is invalid . what am i doing wrong i have the canadian version 17774m and have tried 2 different files with same results usb debugging is enabled got files from sams mobile and the the other rom android something could you maybe give me a link for the correct stock rom as there is so much out info out there i dunno anyore am about to throw it out