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

Last active July 22, 2026 19:21

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Firmware downloads and zip encryption passwords for LG Ultrafine 4k and 5k displays

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

https://lmu.lge.com/ExternalService/lgscreenmanager/mac/FW/22MD4KA_MP7/FWLatestVersion.txt https://lmu.lge.com/ExternalService/lgscreenmanager/mac/FW/27MD5KA_MP4/FWLatestVersion.txt https://lmu.lge.com/ExternalService/lgscreenmanager/mac/FW/27MD5KL_TBT_PD/FWLatestVersion.txt https://lmu.lge.com/ExternalService/lgscreenmanager/mac/FW/24MD4KL_TBT_PD/FWLatestVersion.txt

https://lmu.lge.com/ExternalService/lgscreenmanager/mac/FW/22MD4KA_MP7/ https://lmu.lge.com/ExternalService/lgscreenmanager/mac/FW/27MD5KA_MP4/ https://lmu.lge.com/ExternalService/lgscreenmanager/mac/FW/27MD5KL_TBT_PD/ https://lmu.lge.com/ExternalService/lgscreenmanager/mac/FW/24MD4KL_TBT_PD/

The zip passwords were quickly found using the strings command. The password for each model consists of the model name followed by !LGahslxjqlalfqjsgh!@#:

22MD4KA!LGahslxjqlalfqjsgh!@#
24MD4KL!LGahslxjqlalfqjsgh!@#
27MD5KB!LGahslxjqlalfqjsgh!@#
27MD5KL!LGahslxjqlalfqjsgh!@#

matteosist commented Jul 22, 2026

Hi, Do you have the complete firmware dump? The 1MB one to flash into the EEPROM?

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