Cannot change the time and date on my AT-2 Plus

You chose a Time Zone setting when you first set up your Kindle Fire. Your Kindle Fire uses the date and time setting to display the time in the Status bar, and also to work with other apps, such as a third-party calendar, for example. If you tap Date and Time in Settings, you see four options:

• Automatic: If you want Kindle Fire to control the date and time based on your location, tap to turn this feature On. If you'd rather set the time manually, tap to turn this Off.
• Set Time: To manually set the time, after you turn the Automatic option Off, tap the arrow on the right of this setting to display additional settings. Tap the + (plus sign) and - (minus sign) buttons to change the time, and then tap Save.
• Set Date: Tap the arrow to the right of Set Date and then tap the + (plus sign) and - (minus sign) buttons to set the date you want, and then tap Save.
• Select Time Zone: Tap the arrow to the right of this setting to change your time zone.
• The Set Time settings become available only if you first turn the Automatic option to Off.

Install the latest iOS.

to make changes in BIOS use the arrows and plus and minus.

To change the Time :
- Firstly, press the following key sequence : ALT, 9, 1, 1
- Then, enter the time (HHMMSS)
- Finally you'll hear the confirmation beep

To change the Date :
- Firstly, press the following key sequence : ALT, 9, 2, 2
- Then, enter the date (DDMMYY)
- Finally, you'll hear the confirmation beep

press Alt then 9 - 1 - 1 for the time.

press Alt then 9 - 2 - 2 for the date

As if you have tried changing the date & time in your control panel plus BIOS.There is nothing left to be done regarding changing date & time.
But If your CMOS battery in the motherboard fails,it will always goes back to it deafult date & time.Replace the battery and it will solve your problem.

I recommend to use Sony Lithium Battery

To change the time on a prostar 816 you first need to be at a display set (doesn't matter what the extension number is).
with the handset down, enter #20 the screen should say MMC DISABLED
1) enter in 1 2 3 4 1 # (that enables programming)
2) enter in #55 the screen should say YYMMDDWHHMM
3) enter in the year, month, day, day of the week, hours and minutes(the day of the week values are 1= mon. 2= tues. etc.)
press # when finished.

I read the manual which said to depress the alarm button. That wasn't the right button but I found that depressing the button next to it, the DST button, that that fixed the problem.
Thanks.

Plain and simple, It is in need of a service. My recommendation is to take it to an independent watch marker. My watchmaker is $125 for a full service and has a 2 day turn around time. VS Rolex is $550 plus and who knows how long.

mike - www.consumerwatchguide.com

I'm not positive because I pushed several buttons just trying to get it set and stay set -- but I think I did the following: fist push the "time set" button, ie the "memory plus" button then push the "format" button, ie the red "minus" button to change the settings -- continue until you have set the date and time -- then when you are finished you have to push the "time set" button, ie the "memory plus" button again to set it in place -- at least I think that's what I did