Change encoding — ‘invalid byte sequence for encoding “UTF8”: 0xff ‘

Wanna change your file encoding utility? Here the script (mac and linux)

iconv -f original_charset -t new_charset originalfile > newfile

Just try and congrats you change the encoding now. :D

nb:
based on this https://stackoverflow.com/questions/4867272/invalid-byte-sequence-for-encoding-utf8