You want to apply a Windows Embedded Standard 7 (WES7) firmware snapshot via USB stick but you get the message Failed to access local file.
The firmware update fails.
Do not use a USB 3.0 port (marked by blue plastic in socket),
Use a USB 2.0 port instead.
If this does not help, the FAQ WES7 Snapshots "Failed to access Snapshot File..." may be helpful.