Lenovo Thinkpad E531

uefi update
Insert usb drive and format it to fat32.

/dev/sdX is the device name assigned to your pendrive. Copy the files grldr and menu.lst to the root directory of your pendrive. Copy the bios update CD ISO image to the root directory of your pendrive. Edit menu.lst on your usb drive.

Reboot and press F12 to select booting from USB. Now you should be able to boot the Thinkpad's ISO image and flash the BIOS.

Network
Configure drivers for ethernet and wlan cards.

Install firmware for wlan card.

Sensors
Configure drivers for sensors.

Install sensor monitoring program.

Screen backlight controls
Add acpi_osi='!Windows 2012' to kernel cmdline (grub.cfg).