1. A method comprising: identifying, using a processor, a list portion of a first binary large object (BLOB) for navigation data, wherein the list portion includes byte misalignment data caused by a nonstandard number of bits in the list portion in the first BLOB for navigation data including road segments, road attributes, or map polygons, and wherein a second portion of the first BLOB has byte alignment data; dividing the list portion of the first BLOB into a plurality of elements each having a predetermined size; performing a binary difference on the second portion of the first BLOB and a corresponding portion of an existing version of a geographic database; defining a series of operations for the plurality of elements to transform the first BLOB to a second BLOB; generating an update script including a result of the binary difference and the series of operations; and transmitting the update script to a mobile device to facilitate execution on a set of navigation data.