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10-08-2019

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Thinkpad T480S BIOS update on Linux

2019-10-08, 12:55 PM

Hello,

I'm under Ubuntu 18.04. I haven't updated the BIOS since purchase, so the current version is:

- UEFI 1.08 (N22ET31W)

- ECP 1.05 (N22HT20W)

That is, January 2018.

I would need to know if it's safe to directly upgrade the BIOS from versions 1.08 to 1.34 (ECP 1.17) using the officially recommended fwupdmgr procedure (https://pcsupport.lenovo.com/us/en/products/laptops-and-netbooks/thinkpad-t-series-laptops/thinkpad-t480s-type-20l7-20l8/20l8/20l8s02d00/pf130j0b/downloads/DS502226), or if the upgrade should be performed more incrementally.

 

In addition, the corresponding n22ul17w.zip archive contains two cab files (N22ET57W.cab and N22HT32W.cab); it looks like one contains the UEFI BIOS and the other one the ECP. Should both be installed sequentially after ZIP extraction (and if so, in which order), or is fwupdmgr "ZIP-aware", i.e.

fwupdmgr install n22ul17w.zip

would work?

 

Any help would be greatly appreciated, thanks!

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3 Posts

10-08-2019

ES

8 Signins

72 Page Views

  • Posts: 3
  • Registered: ‎10-08-2019
  • Location: ES
  • Views: 72
  • Message 2 of 2

Re: Thinkpad T480S BIOS update on Linux

2019-10-10, 8:20 AM

Solved. Here's how, for anyone asking themselves the same questions:

2- Install downloaded CAB:
fwupdmgr install 2745a26ac883b9c171522bb16e1c628632932b20-Lenovo-ThinkPad-T480s-SystemFirmware-1.25.cab 
3- Reboot
4- Update to latest version:
fwupdmgr update
Everything went smoothly and my BIOS is now up-to-date.
 

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