This is Haibi. I’m with MonsterGODJ team.
‘update. bin’ file is not a zip file， So you don’t need yo unzip it. Try to put the ‘update. bin’ file into ‘GODJ-DRIVE’ or ‘SD card’ folder and update.
If you have any other question， plz let me know. :)
Thanks and regards,
having the same problem down loading firmware