Your robot's serial number is printed underneath its body.

To find Dash or Dot's firmware version: 
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1. Open the Go app 
2. Connect to your robot
3. Tap the 3-line menu icon in the top left corner, then tap About
4. See the firmware version near the center of the screen

To find Cue's firmware version:
1. Open the Cue app and connect to Cue
2. Tap the avatar picture in the top right corner, then tap that same location after the picture changes to a gear with robot inside
3. Tap edit, then Advanced
4. See the firmware version near the bottom of the screen