Usb problem help

hello guys I am trying to mod my gta v save file from horizon but my horizon is not detecting my usb but my computer is i have tried to format it but nothing happened and another thing whenever i put my usb in my xbox 360 it automatically configures it helppp PLZ i tried alot of usb on differnt pc aswell but same result help !!

sorry for bad english help p;lz

Configure the flash drive on your xbox.

its is configured automatically !
when ever i put any usb in xbox 360 it makes it its memory unit but when i press Y it gives rename option format option transfer option and clear cache option PLZZZ HELP

Use the format option. Then move your GTA V save to it and see if Horizon sees your flash drive.

yes it did and the usb came for few seconds but i disappeared again and then i put my usb back to xbox 360 and the save i moved was not there the usb was empty ■■■■ help !

Its working now there was a shortcurt virus which now i have cleaned thnx alot