84
Firmware
Upgrade
Using
microSD
Card
1.
Download
“update.zip”
from
supporting
site.
2.
Insert
a
microSD
card
into
a
PC.
3.
Copy
“update.zip”
to
the
root
directory
of
the
microSD
card.
4.
Make
sure
the
target
device
is
power
on
with
a
fully
charged
battery.
5.
Insert
the
microSD
card
into
the
card
slot
of
the
target
device.
6.
Tap
to
go
to
Settings
‐
>About
phone
and
tap
System
update.
7.
Choose
the
software
from
the
SD
card
.
8.
Tap
Ok
to
reboot
and
update
9.
During
the
period
of
update,
the
target
device
will
automatically
reboot
for
TWO
times.
Please
don’t
operate
the
device
until
the
update
is
completed.
