System; Updating Your Tablet's Operating System; Resetting Your Tablet - Acer Iconia One 10 B3-A40 User Manual

Changing language and text options
To set your location and language input preferences open Settings >
Languages & input.

System

Setting the date and time
To set the date and time, open Settings > Date & time.
Note
If you travel frequently or live in an area that uses daylight saving time, and
have mobile network access, activate Automatic time zone. Your tablet will
set the date and time based on information it receives from the network.
To set an alarm

Updating your tablet's operating system

Your tablet can download and install system updates, adding support
for new devices or expanding software options.
To check for operating system, or 'firmware', updates, open Settings
> About tablet > System updates > CHECK NOW.
Note
Downloading new firmware can take up to 40 minutes, depending on your
network speed. Do not press the power button or access your tablet in any
way during a system upgrade to prevent firmware installation failure.

Resetting your tablet

A data reset, or format, restores your tablet to factory settings.
Important
This will erase all your personal information, any contacts stored on
your tablet and any programs you installed.
To perform a reset, open Settings then tap Backup & reset > Factory
data reset; tap RESET TABLET and then ERASE EVERYTHING.
see Setting an alarm on page
Advanced settings - 45
24.