Usb dosnet have the file for bios flash

Jan 23, 2019
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hello i need help, my flash drive dosent contain the file when im trying to flash my Mobo bios.Msi z270-a pro I got the bios off their website for my specific board, i flowed all the instructions, only thing on the usb is the bios folder. i get into m-flash and when i choose the folder with the update in it nothing is in there only 2 dots are displayed (for example) ..
Update- i tried another usb drive and same thing when i enter m flash and slect the drive just .. pops up
Thank you for giving you answers