2nd AMS all LEDs blink, 1st AMS LEDs steady

I just received my second AMS today. Setup went fine and I am currently printing an 8 color print.
Curious though… On the original AMS, the LEDs are on solid, whereas the new AMS, the LEDs are blinking in unison once per second. Why is this? Have I missed something?

Different firmware versions. Please update them when you see the update notice.