Skip to content

Instantly share code, notes, and snippets.

@cstrouse

cstrouse/lg-ultrafine-4k-and-5k-monitor-firmware.md

Last active June 16, 2026 05:40
Show Gist options

  • Select an option

    Learn more about clone URLs
  • Save cstrouse/73c9f1ff6b234457a856bd4bcb5b9617 to your computer and use it in GitHub Desktop.

Select an option

Learn more about clone URLs
Save cstrouse/73c9f1ff6b234457a856bd4bcb5b9617 to your computer and use it in GitHub Desktop.
Download ZIP
Firmware downloads and zip encryption passwords for LG Ultrafine 4k and 5k displays
@thomasqbrady

thomasqbrady commented May 28, 2026

Copy link
Copy Markdown

Tried the patched version. Update button still fails at 20%. I've downloaded the firmware from the link above, but I can't figure out what file to open with the updates? I tried the zip file itself, and tried looking in each unzipped folder, and there's nothing the updater is happy to work with.

@thomasqbrady

thomasqbrady commented May 29, 2026

Copy link
Copy Markdown

I needed to reboot after installing the patched version. I suspect because of the lghub_updater background process that auto-spawns itself even if you force-quit (which I think was keeping the broken version running in the background even after installing the patched version, until I restarted). Got the firmware updated, and this fixed my wake issues with an LG 27MD5KL. Thank you!

@mnevadaf

mnevadaf commented Jun 16, 2026

Copy link
Copy Markdown

27MD5KL-B and Tahoe 26.5.1. I tried the update using the patched app above, and it was able to get past the 20% hang I was experiencing with the stock LG Screen Manager app, so thank you!

But, when I try to update using the patched app, it reaches about 85% then stops the upgrade and shows the following:
Screenshot 2026-06-16 at 12 33 58 AM

I've tried unplugging the monitor from power and USB, waiting 5min, upgrading again - same issue. Anything else I can do?

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment