I downloaded the BIOS file from Lenovo site description: BIOS Update Bootable CD for Windows 8 (32-bit, 64-bit), 7 (32-bit, 64-bit), Vista (32-bit, 64-bit), XP - ThinkPad T520 and T520i. This results in an iso file named: 8auj30us.iso.
I at first used ImgBurn to burn this image file to a DVD. This appeared to work, but only file that shows on DVD is desktop.ini. The dvd does not boot
I then tried using rufus to create a bootable USB stick. It reported iso was in unsupported format or unbootable. Again, I must be doing something wrong
I tried again using Etcher. It at first said that the iso had no boot partition (or something to that effect). It allowed me to continue and appeared to run. But the resulting USB stick would not boot.
I haven't done this sort of stuff for years - any help appreciated.




