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September 25th, 2024 12:43
XPS 9520 BIOS 1.26
Upon upgrading my XPS 9520 BIOS to the latest 1.26, I lost the functionality of the keyboard illumination. Instead of being able to adjust the backlight using the function key the keyboard would only light up in the 'dim' setting or not at all.
Downgrading back to 1.25 solved the issue.
DELL-Nat M
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December 19th, 2024 12:48
New BIOS Update Available!
We are excited to announce that the new BIOS is finally available to fix the issue with the keyboard backlight. Please update to the latest version and let us know if it resolves the issue on your 9520 system.
If you still experience problems after updating, please click on Get Help Now at the bottom right corner of this page to contact a support agent for individualized assistance.
Thank you for your collaboration and happy holidays!
(edited)
Nomadsland
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September 26th, 2024 16:24
Same thing happened this week on XPS 9320 when upgrading BIOS to 2.15.0.
RickLieb
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September 26th, 2024 22:05
I had the exact same issue and solution. Upon upgrading my XPS 9520 BIOS to the latest 1.26, I lost the functionality of the keyboard illumination. Instead of being able to adjust the backlight using the function key the keyboard would only light up in the 'dim' setting or not at all.
Downgrading back to 1.25 solved the issue.
DELL-Nat M
Community Manager
Community Manager
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3K Posts
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September 27th, 2024 14:33
Hi everyone,
Thank you for highlighting this issue! Dell Engineering is already working on a solution, and we’ll share updates as soon as we have more information.
Clover7
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October 1st, 2024 09:25
Same issue on BIOS 1.26 keyboard lights on dimmed or off only.
Clover7
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October 16th, 2024 11:43
@DELL-Nat M Is the 1.27.1 BIOS also a fix for the iisues here?
https://www.dell.com/support/home/en-uk/product-support/product/xps-15-9520-laptop/drivers
RickLieb
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October 17th, 2024 22:54
I posted earlier that downgrading to the last bio version solved the exact same problem, but I have since had to reload windows from scratch due to a nasty BOT. Now DELL won't allow me to downgrade my bios. Do I wait for a fix or work towards finding a way to downgrade?
DELL-Nat M
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October 18th, 2024 15:08
Hi everyone,
The new BIOS 1.27.1 does not address the issue and is locked for downgrading as it contains security patch.
We'll keep you updated once a new BIOS that addresses this issue is available.
Clover7
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October 18th, 2024 15:28
@DELL-Nat M Thanks, Yes I found out that as BIOS 1.27.1 just ran.
DELL-Chris M
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October 30th, 2024 13:54
If you have upgraded to the latest BIOS and are experiencing issues, contact Technical Support by clicking the blue "Get Help Now" button in the bottom right corner of the screen. They will first verify your ownership and warranty status. Then, they will provide the next revision of the BIOS based on the “Dell Pre-Release terms.”
Note: Once you agree to the Dell Pre-Release terms, it may take up to 48 hours to share the file with you.
(edited)
Clover7
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December 20th, 2024 15:48
@DELL-Nat M
All good now with latest BIOS