At the end of running “Update Media” for the 1st run or on any run with the “-force” argument passed, an update script can be called via the “LitetouchPE.xml” file.
Here are the dynamic vars exposed that can be called via a custom script.
ADKPath | C:\Program Files (x86)\Windows Kits\10\Assessment and Deployment Kit
CONTENT | C:\Users\bg\AppData\Local\Temp\MDTUpdate.5808\LiteTouchPE_x86.iso
DEPLOYROOT | c:\DeploymentShareITP
RealPlatform | AMD64
STAGE | POSTISO
TEMPLATE | LiteTouchPE