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2. Upgrade BOOT: Press and hold the power button,
number keys 4 and 7 when your device is off until the
screen appears upgrade BOOT. Restart your device when
the upgrade has successfully completed.
3. Upgrade OS:
Press and hold the Power button, number
key 4 and “*” until the screen appears upgrade OS. The
upgrade process takes a few minutes, please be patient.
7.3 6.3
C
ARING FOR
Y
OUR
D
EVICE
Taking good care of your device will ensure trouble-free
operation and reduce the risk of damage to your device.
Keep your device away from extreme temperatures and excessive
moisture.
Avoid exposing your device to direct sunlight or strong ultraviolet
light for extended periods of time.
Do not place anything on top of your device or drop objects on your
device.
Never privately attempt to disassemble, repair or make any modifi-
cations to your device.
Do not store or carry flammable liquids, gases or explosive materials
in the same compartment as your device, its parts or accessories.
Chapter 9
Regulatory
Information
This chapter provides regulatory statements and safety notic-
es on your
device.
NOTE: Marking labels located on the exterior of your device
indicate the
regulations that your model complies with. Please check the
marking labels
on your device and refer to the corresponding statements in
this chapter.
Some notices apply to specific models only.
