Hi, please read the thread about 12.0.3 release.
Really there is no "two" versions of the 12.0.3 firmware, what did happen was the firmware change some TSL support but the genius on the N corp do not prepare his servers to work with the set of protocols used by new firmware, so when the people start to using that version they was unable to communicate with N servers, then they stop the distribution of firmware until they get his house in order, and only then they allow the download of the SAME firmware.
So there is not a release and "re-release" of firmware there is only one.
The sigpatches for that version are sightly different of version 12.0.2 the FS are new but ES patches are the same for all 12.0.X versions until now.