Abstract: Presented are scalable systems and methods for dynamically and incrementally updating a file system to patch firmware in an embedded device deployed in the field. In various embodiments, advantageously, the update and release process of, e.g., Linux-based firmware may be accomplished by using a simplified patching process that updates the firmware without having to update or replace the entire file system. As a result, a patch, e.g., security fix to existing firmware in the field, can be provided to customers relatively quickly, e.g., prior to a full firmware release that incorporates the fix is made available later on, thereby, eliminating traditional, full-image upgrades that are subject to time consuming release cycles, space constraints, and other limitations.