I'm trying to flash the bios to newest version, I've downloaded the zip and extracted it, it's basically a file 'E7D09IMS.A00'. I've copied it onto USB, went into BIOS, entered M-Flash and... I see the USB drive, but I don't see the file. The manual says it is enough to just copy and select the file - but I can't since I don't see it in the M-Flash file browser. Any ideas?