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Lenovo does not seem to provide laptop firmware updates for linux. Laptops tend to lack a dvd drive lately. How do I update under Linux/Unix?

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Here's what a colleague shared recently. Thought it might be useful to a wider audience. Marking as a community wiki as I don't share credit for it. Procedure might work for other laptop makes I guess.

  • Visit the driver matrix for your T460p on support.lenovo.com and download the image of the "BIOS Update CD for Windows 10". (I ended up getting the version for dos But I don't think it really matters)
  • If not already installed, install genisoimage and geteltorito:
    • yum install genisoimage geteltorito
  • Extract the El Torito boot-image from the downloaded *.iso-file,
    • in my case that is r07uj12wd.iso:
    • geteltorito -o bios.img r07uj12wd.iso
    • Find out the block device name of your USB flash drive: lsblk (e.g. /dev/sdb)
  • Write the extracted image to an USB stick. In my case it is the USB (I had a old 1G laying around I used) stick is attached as /dev/sdb:
    • dd if=bios.img of=/dev/sdX bs=1M status=progress ; sync
    • Boot from the USB stick and follow BIOS upgrade instructions

I did this on my t420s And it worked with out a problem

Attention: the above dd command is very dangerous as you can wipe out important data in case you choose the wrong device name. That's why I've put X in place of letter there - to avoid careless copy/paste troubles. Proceed with care!

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