Modifying OSD Standalone / Offline Media

Hi Guys,

Is there anyway that we can edit or modify SCCM 2012 OSD offline media

The situation is, we have created an OSD offline media and distributed to nearly 25 different locations for hardware rollout. Recently we have identified an issue and want to disable a step in that media.

So is there any XML file or any other file we can modify to disable that step? rather then re-creating 20GB offline media and re-distributing to the 25 locations?

Thanks in advance.