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BIOS update for Dell InfinityEdge XPS 15 improves battery life, performance and more

Dell XPS 15
Dell XPS 15

If you are one of the lucky people to have a new Dell XPS 15 (9550) aka the one with the new InfinityEdge display you will want to make sure to grab the new 01.01.15 bios released earlier this week.

The update can be found by using the Dell update app on some PCs or by using Dell's Driver Update page found here on the Dell site (opens in new tab). This update is rather significant due to the changelog and what it fixes and addresses.

As can be seen above, the update improves audio performance, NVMe battery life, i7 CPU, system boot time, and sleep resume time. Those are some substantial fixes and users are strongly encouraged to grab the update for the best performance.

Unfortunately, no such update exists yet for the Dell XPS 13 (9350). However, that device has had updates in the past as well and is expected to get more as needed.

Windows Central is currently in the process of reviewing both the XPS 13 and XPS 15 and will have more in the coming weeks.

Daniel Rubino
Executive Editor

Daniel Rubino is the Executive Editor of Windows Central, head reviewer, podcast co-host, and analyst. He has been covering Microsoft here since 2007, back when this site was called WMExperts (and later Windows Phone Central). His interests include Windows, Microsoft Surface, laptops, next-gen computing, and arguing with people on the internet.

  • Any review coming for the XPS 12? I am most interested in that one, but see some pretty bad reviews on Amazon relating to battery life. My father got one of these XPS 13's though, and I have played around with it a bit. Very cool laptop, if you are in the market for that form factor, I would definitely go with the XPS 13.  
  • Excellent, looks like I have plans when I get home! Once the Intel Display Drivers are out of beta, it'll be the perfect little machine for me :)
  • I want BIOS update for my HP
  • Always a risk updating BIOS/UEFI. If it aint broken - dont fix it.
  • But if it can be improved, improve it.
  •   I have had mine a few days now. I am of two minds on this machine. It's beautiful. It's fast. It's elegant. But; Windows 10, 6 months on still feels like a beta OS.  I keep seeing the dreaded "Intel Hd has crashed" popups.  Which wouldn't be that bad if it didn't completely Bork Firefox when it happens.  I might just set it to always use the nvidia card. Bluetooth is a disaster. My MX anywhere 2 is unusable.  Even wifi doesn't seem solid.  I have ordered the Intel card to replace the dell dw1830. I have hopes that will solve the wireless issues.   
  • ^ This. Have mine for a couple months now. Great machine being held back by W10.
  • Honestly, this seems to be driver related instead of an OS issue. There are widespread issues around crashes and battery life that point to a common issue across intel hardware. Many people are blaming Win 10, but it seems deeper than that.
  • W10 is still buggy as hell though. Apps don't update automatically. Mail is a complete joke. Live tiles don't update. Some Microsoft apps keep installing when I don't want them. This OS needs some serious polishing all around.
  • I'm running Win 10 on much older hardware and so are other members of my family and we have seen none of that. Are you sure it's not hardware related?
  • To be clear, none of my main issues with W10 are urgent or dealbreakers. It just doesn't look or feel like a finished OS, though it does work like one. For instance, Windows 7 looks very clean and professional. Even Windows 8, if you stay out of the modern UI settings areas (which is entirely possible), looks polished. But Windows 10 has eliminated parts of the legacy control panel, and forces you into the newer modern ui settings app. And it just looks hinky. However, though I haven't tried in the last few months, programs like AutoCAD and Accountmate (a proprietary accounting plaform written on mysql) don't work well on 10. My workstation is running 7, I don't trust it yet with 10. Maybe when I am comfortable with windows 10 on my home computers, I will move my office from 7 to 10.
  • Search on Windows Central for new Intel Drivers released on 12/23 and install those instead. Even Dell has new display drivers (slightly older) to fix those.
  • One other thing that I haven't seen (or noticed at least) on other windows 10 computers: when I drag a window, this little box pops up with snap options. It's often gets in the way, and I don't want it. How do I get rid of it? I looked through mouse and display settings and don't see anything. Is this Dell specific? I have the signature edition from the microsoftstore.
  • ^ This.  I have the Precision D5510 (same chassis as the XPS15, tweaked guts), and that same stupid annoying little window.  This is with the Dell build.
  • Yes!  I picked up a Dell XPS15 over the weekend, and that snap-helper box you mention was incredibly annoying.  It might be useful to some people, but I find it to be in the way far too often. It comes from the Dell PremiereColor helper application, which should be running in your systray.  Right-click that and select Disable Display Splitter.  
  • I updated the BIOS of my motherboard this week just to see the improvements because my version was 2 years old. But how can BIOS update affect anything? Does it still run after the OS is loaded?
  • Good news!
  • got stuck at the getting updates ready do not restart windows page for about 10 min so I tapped the power button and then it restarted into the bios update and worked fine. Hopefully no one else has this issue but thats how I solved it. This should have been the stock bios... so much faster to resume from sleep