Dell advises that any BIOS update related to Update to the latest CPU microcode to address CVE-2017-5715 should NOT be installed at this time (as of 1/22/18) and that it has removed all updates related to Spectre Vulnerability 2 while it works with Intel to revise BIOS updates because of a problem with the original BIOS updates posted.
BRIEF Followup to my earlier comments in this thread - with more details and considerations - my DELL XPS 8930 was delivered on 12/29/2017 - and was "successfully" updated to BIOS "1 (dot) 0 (dot) 5 (12/12/2017)" shortly thereafter - on 01/20/2018 however, the pc did not properly boot - and I finally decided to restore the computer to "factory settings" (via "Factory Image Restore") - at the time - I thought the boot-up problem was due to a suspicious program that was installed (and which my Avira AV detected as such) and not to the newly installed BIOS - however - after reading some of the messages here and elsewhere on the internet - the pc boot-up problem may have been due to the newly installed BIOS after all - nonetheless - the pc has now been restored to "factory settings" - and - Dell Diagnostics notes that the BIOS installed is BIOS "1 (dot) 0 (dot) 5 (12/12/2017)" - all seems to be going well at the moment - hopefully the pc will continue to be ok - in any case - Enjoy!
PS/1 => (Possibly helpful => noted details at time of computer problem/reset included: mouse not working; stop code (bsod?); xps 8930 1.0.5 BD[removed] Build 430610 UEFI ROM; Dell SupportAssist OS Recovery v184.108.40.20634)
PS/2 => (Add - 01/30/2018 => installed possibly relevant Microsoft Update Patch => https://support.microsoft.com/en-us/help/4078130/update-to-disable-mitigation-against-spectre-varian... )
No news from Dell yet on this Bios update.
XPS 8930 bios 1.0.2 is still the latest, only improving Intel Core I3 support (?)
Meanwhile you can assess your system status regarding Meltdown and Spectre with this little ( 125 Kb !) utility from Gibson Research Corporation : https://www.grc.com/inspectre.htm
Thanks to ZDNet for pointing it out.
I checked it against Virustotal and it comes out clean ( 1 detection on 65, so false positive)
My system shows protected for Meltdown, but not for Spectre.I am curious if the folks who succeeded to apply Bios 1.0.5 show up all clean .
FWIW - My Gibson InSpectre tool results: Meltdown/yes; Spectre/no; Performance/good - my present conditions => BIOS 1 (dot) 0 (dot) 5 (12/12/2017) & W10/home (version 1709/build 16299.192) + MS-patch => https://support.microsoft.com/en-us/help/4078130/update-to-disable-mitigation-against-spectre-varian... & see my earlier posts in this thread for more details - hope this helps - iac - Enjoy!
Please understand that a W10/MS patch to disable the Spectre flaw protection was installed - please see => https://support.microsoft.com/en-us/help/4078130/update-to-disable-mitigation-against-spectre-varian... - this *might* be helpful in understanding the Gibson tool results - BIOS 1 (dot) 0 (dot) 5 by itself, without the W10/MS patch installed, was not studied - iac - Enjoy!
My 8930 was received on 2/1. It has BIOS V1.0.5. No problems so far. I did install kb4078130 - just "in case". Based on what I have read, the "fix" in this version dealt with one of the problems in the Intel chip. I am guessing that Dell got nervous when Intel announced that there was a problem with the info they gave PC vendors and "pulled" this version. I think bringing the BIOS back to 1.0.2 has a risk too.