Acer ICONIA Tab W500 Service Manual page 56

Figure 2-5. BIOS Boot
5. Enter Main Tab, Enabled "F12 Boot Menu", then save and Exit.
6. During Reboot, press Quick Button, then press F12 when you see logo, select USB HDD
Boot, enter Dos.
7. Please use [flashit.exe] to update BIOS, command is as below:
flash.exe XXXX.XX[BIOS Bin File
Note：
Press Quick Button when Boot, to close BIOS quick start function. Then can select F2 to
enter Setup Menu or press F12 and select Boot Device.
Keep AC power on, to avoid sudden power outages during update.
Please make sure correct BIOS version, can support this platform
2-10
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System Utilities