You need to install all these BIOS updates completely outside of Windows... Manually download the BIOS 1.1.30 file and save on (non-bootable) 2-GB USB stick (FAT32 formatted). With PC completely off, plug the USB in and then power on. Start tapping F12 when you see the Dell splash screen. When the F12 menu opens, select the Flash Update option. Use tab key to move between the boxes on the update screen. You shouldn't have to change any of the fields, but when you see a box with the file name for the BIOS update press Enter. If that doesn't automatically move you to the next box, use the tab key. When you get to the bottom, the start button should be highlighted. Just press Enter. PC will reboot itself ~2-3 times during the update. Just leave it entirely alone, even if it looks like it shut down and isn't doing anything. When the update is finished, PC will automatically boot to your desktop.
SupportAssist recommended the latest BIOS update for my XPS 8930, but it failed when it tried to install it. I looked up the latest BIOS installer and downloaded it, but when I try to install it manually I get the error "Secure Flash check failure (0x1)". I have tried rebooting and running the installer as administrator, and neither worked. Curiously, when I run SupportAssist again and asked it to check for updates, it doesn't recommend the new BIOS.I am currently running BIOS version 1.1.26. The one I am trying to install is 1.1.30. Should I install this new BIOS? If so, how do I get around this problem?Thanks.
XPS 8930, BIOS install, Secure Flash check failure