Microsoft released KB5008400 to insiders in the dev channel.

Test update KB5008400 will change your build number to Windows 11 22499.1010. The update does not include any new features, it’s just intended to test the maintenance pipeline for builds in the Dev Channel.

If for whatever reason you still like to install the update manually, download it down below.

How to install this update: Unzip the downloaded .zip file, Run W10UI.cmd as Administrator. Choose option 0 to start the installation from the CMD menu.

Download: x64-KB-5008400
Download: arm-KB-5008400