Techniques directed to an update package including a set of instructions used for, in a remote client device, creating a new data image from a base data image are provided. A method for generating an update package includes determining differences between a base data image and a new data image, generating COPY instructions corresponding to respective sections of code in the base data image, organizing the COPY instructions into a directed acyclic graph, performing cycle detection on the COPY instructions in the directed acyclic graph to detect any cycles, when a cycle is detected, identifying a COPY instruction in the detected cycle with a smallest overlapping part, removing the overlapping part from the identified COPY instruction, and generating a COPYBACK instruction including the overlapping part removed from the identified COPY instruction, and after all cycles have been detected, generating the update package based on the COPY and COPYBACK instructions.