Lenovo Thinkpad E531

UEFI update
Insert usb drive and format it to fat32.

is the device name assigned to your pendrive. Copy the files and  to the root directory of your pendrive. Copy the bios update CD ISO image to the root directory of your pendrive. Edit on your usb drive:

Reboot and press 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  to kernel cmdline.