If you are upgrading BIOS on the Wyse 5470 Thin Client, ensure that you have connected the device to the external power source using the power adapter. If you do not connect the power adapter, BIOS update fails. In this event, connect an external power source and reboot twice to install BIOS.
NOTE:When you use the BIOS upgrade feature for the first time, the BIOS package downloads even if the existing BIOS version is the same version that is uploaded.