sorry if this does not work, but I want you to try it on the Tamagotchi v5.5 for sure, please let me know if it worked or not. (it's worked for me)
Here it is the "screensaver" Time :
08:00 AM
10:00 AM
12:00 PM
05:00 PM
06:00 PM
*set one minute before time, and wait until the time
and...