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From Windows (11 22H2), neither Dell Update, SupportAssist, nor the Dell Support Website detect any available BIOS updates. The site also only lists a single manual entry, which is for the one that is already installed (1.27 Sep 2022).

However, fwupdmgr from Ubuntu detects three updates - the most current and two previous ones (1.31, 1.30, 1.29).

Is there a chance any of these versions haven't yet been officially tested and/or approved for Windows, and is why they are not visible from there? Could updating pose a risk to Windows' stability?

According to the /etc/fwupd/ config files fwupdmgr appears to be using LVFS (Linux Vendor Firmware Service), so I'm confident in the firmware's authenticity though uncertain of its Windows support.

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The XPS 15 9570 Support page lists only version 1.27.0 as the last version.

The Windows software is correct - the Linux software probably wrongly detects your computer model.

My advice : Do NOT install any other version than the one proposed by the Dell software on Windows. Using the wrong BIOS can brick your computer.

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  • The close version numbering had me gloss this possibility over. Thanks!
    – samus
    Commented Jul 2, 2023 at 16:07
  • Running fwupdmgr block-firmware, just need to find checksum
    – samus
    Commented Jul 2, 2023 at 16:14
  • How do I block updating a specific device with fwupd?
    – samus
    Commented Jul 2, 2023 at 16:29
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    If your version of Ubuntu is up to date it might be worth raising that as a bug.
    – Mark Morgan Lloyd
    Commented Jul 3, 2023 at 6:52

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