c2-02 Invalid file indicator 0x91
 

Can anyone help me plz, I'm trying to flash a c2 cuz if it's without sim it restarts, I've downloaded the files from support but when I try to upload the files for flashing it gives me the error invalid file indicator and I've already download the files thrice and its the same, should I try phoenix? has any1 flash this phone before? some guidance plz.
Thanks in advance for any help.