An assembly for an aircraft comprising: a control module (26H,28H) including a processor and a local flash memory that stores a first instance of operational software executable by the processor and that relates to functionality of the control module to selectively power, control, or otherwise interact with a vehicle or aircraft system; and a backplane memory device coupled to the control module by a common backplane, the backplane memory device including shadow flash memory that stores a second instance of the operational software; wherein the control module includes a synchronization module that accesses the memory space of the second instance of the operational software in the backplane memory device, compares the first instance and the second instance, and replaces the first instance with a local copy of the second instance in response to at least one predetermined criterion being met; the assembly further comprising a housing (26A,28A) and a plurality of line replaceable modules including the control module, the housing at least partially receiving the common backplane and the plurality of line replaceable modules coupled to the common backplane; wherein the control module is a first line replaceable module, and the at least one predetermined criterion includes replacement of a second control module in the at least one assembly of the satellite power distribution assemblies with the first line replaceable module; wherein the first instance is a first version of the operational software, and the second instance is a second, different version of the operational software, and wherein the at least one predetermined criterion is met in response to the first version being an earlier or incorrect version of the operational software of the second version. a control module (26H,28H) including a processor and a local flash memory that stores a first instance of operational software executable by the processor and that relates to functionality of the control module to selectively power, control, or otherwise interact with a vehicle or aircraft system; and a backplane memory device coupled to the control module by a common backplane, the backplane memory device including shadow flash memory that stores a second instance of the operational software; wherein the control module includes a synchronization module that accesses the memory space of the second instance of the operational software in the backplane memory device, compares the first instance and the second instance, and replaces the first instance with a local copy of the second instance in response to at least one predetermined criterion being met; the assembly further comprising a housing (26A,28A) and a plurality of line replaceable modules including the control module, the housing at least partially receiving the common backplane and the plurality of line replaceable modules coupled to the common backplane; wherein the control module is a first line replaceable module, and the at least one predetermined criterion includes replacement of a second control module in the at least one assembly of the satellite power distribution assemblies with the first line replaceable module; wherein the first instance is a first version of the operational software, and the second instance is a second, different version of the operational software, and wherein the at least one predetermined criterion is met in response to the first version being an earlier or incorrect version of the operational software of the second version.