Zoom H4n - Manual (Page 130)

1
Press.
You cannot use this setting
during recording and playback.
NOTE:
2
Select and press.
129
After it starts, the version of H4n can be confirmed.
6-04 Utility :
Utility :
3
Select and press.
system version
boot program
version
Press the [MENU] button for
more than 2 seconds, and start
operation from the top screen.