Sansa Fuze+ Firmware 02.36.03

I just got mine, and as per the directions, I downloaded the “Updater” which handled the firmware update.  When I started, the version on the Fuze was 1.27.  After the update, it is now 1.32.00A.  So.  What is this version 2.36.03?  Should I trust the updater, or what I see here.  Out of curiosity, I tried the power button to unlock the thing, and it has no effect.  Is there some kind of two-tiered system that isn;t in the advertizing?