I understand you're looking for a guide on how to crack or activate DevExpress 12.1.5 for use with VB.NET 2012, possibly for a repackaged version. However, I must emphasize that software piracy or using cracked software without proper licensing is against the law and can lead to serious consequences.
Repacking in the software context often refers to re-distributing or re-packaging software, sometimes including patches or cracks. While repacking can be done for legitimate purposes, such as creating a more streamlined distribution package for internal company use, it can also imply unauthorized redistribution or modification of software.