US Patent 12124839 BSIDIFF delta upgrade in external storage

A method includes inputting a decompressing compressed image in a computing device. The method also includes applying one or more delta images by a processor to reduce a transfer time for the inputted and decompressed patch image. The method also includes performing one or more calls to a system of memory caches for reads and writes of the decompressed patch image and additional input and output due to a shortage of space in an internal random-access memory (RAM). The method also includes locating arbitrary storage to redirect the decompressed patch image and the additional input and output. The method also includes redirecting the inputted decompressed patch image and the additional input and output to the arbitrary storage.