422
When the sleep timer is set, even if the device is active, it powers off after
the specified amount of time. If you set the sleep timer for "5" minutes and
press "Fn-j" after 2 minutes, "3" is displayed in the edit box, indicating the
time remaining before the sleep timer powers the unit off.
17.17 Upgrade Braille Sense U2 QWERTY Firmware
Using this utility, you can update the Braille Sense U2 QWERTY either via
an Internet connection or from external media containing the upgrade files. If
you choose the "Online" method, be sure you have an active Internet
connection before attempting the upgrade. When you update the Braille
Sense U2 QWERTY, all of the settings are returned to their default status.
Data in the flashdisk is protected. However, we recommend you backup your
files before updating the Braille Sense U2 QWERTY Firmware as
unexpected problems can occur.
Note: You cannot cancel the update once it has started. You must not reset
the unit during an upgrade. You must keep the unit connected to AC power
throughout the upgrade process. We recommend you do not touch the
Braille Sense U2 QWERTY while it is updating. It may take up to 30 minutes
to update the Braille Sense U2 QWERTY, depending on the speed of your
Internet connection. On completing the installation, the Braille Sense U2
QWERTY reboots again to finish the update and places you in the "program"
menu.
Also note: the upgrade files are temporarily stored on the flashdisk for
installation. If you do not have enough memory available on the flashdisk,
the Braille Sense U2 QWERTY is unable to update until you make room for
the upgrade files.
