Mfg12gYYMMDD.dat	: standard mfg file support all expander IDs.
Mfg12gNYYMMDD.dat	: alternative mfg file support PCB rev. 1.0 or later only.
			(available since version 1.25)

The alternative MFG file name as "Mfg12gNYYMMDD.dat" works with PCB rev. 1.0 or newer only.
This file remove some models that are mature and not need to update to reduce the download time.