![SAM (Stern) Boot Flash 3.1 U9 EPROM SAM (Stern) Boot Flash 3.1 U9 EPROM](https://www.pinball.center/18117-large_default/sam-stern-boot-flash-31-u9-eprom.jpg)
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Software revision 3.1 of the 8mbit Bootflash EPROM in socket U9 used on all late model Stern S.A.M. pinball machine computer systems.
This software revision is necessary to enable the Stern SAM pinball system to read all current types of USB flash drives for software updates.
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