The last time wrote about my Lenovo ThinkCentre M93p, was at Christmas time and I talked about a known bug that affects the shutdown process under Ubuntu. On January 22, 2015, MadMat said that Lenovo released a BIOS update. I finally decided to make an effort of doing this without bricking my computer (I once read how to do it and chickened out). But today, I tired to do it and succeeded it at it. I wrote a comment on the bug page on that says,
If you guys want to do the update, the USB Drive UEFI BIOS Flash Package is your best bet. Make sure you use Windows (didn’t work on Ubuntu and Wine for me) and a program called Rufus that allows you to create a MS-DOS bootable drive. BUT! Don’t stick the files from USB Drive UEFI BIOS Flash Package on it when creating the bootable disk, DO IT AFTER.
This how I did it but I don’t know if there is another way to do it. If you need to do an update, I would suggest to do it my way.