First Generation MMS-5A or MMS-2A
In DealerZone, any Gen 1 MMS will show that it is eligible for a platform upgrade when you manage the unit.
MMS-5A with Serial Numbers lower than 311-10-1610210007
MMS-2A with Serial Numbers lower than 210-11-1606150016
Most SMS Units will be first-generation
Can be confirmed if you have firmware version: 5.35.20191111.0 or 5.35.20170419.0
First Generation MMS units can have the following firmware versions:
5.35.20210201.1 (Latest Release)
5.35.20210106.0
5.35.20201124.0
5.35.20201005.0
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