5
Critical
Battery
Level
During
power
on
when
battery
level
is
"Critical"
Light
will
blink
three
times
when
turned
on
if
the
battery
is
critically
low.
It
will
then
turn
off
by
itself.
Device
Update
When
firmware
update
started
LED
constellation
has
circular
blinking
pattern
DEVICE
RECOVERY
If
the
controller
isn’t
working
correctly
and
you’re
unable
to
update
the
device,
you
can
always
restore
the
device
to
factory
conditions.
To
Recover
your
device:
1.
Power
off
device
2.
Open
battery
cover
(Ensure
you
have
good
batteries
when
performing
device
recovery)
3.
Press
pairing
button
4.
Keep
the
pairing
button
pressed
and
power
on
the
device
by
pressing
home/Windows
button
for
4
seconds
5.
Release
both
buttons
and
let
the
device
power
on,
It’s
ok
if
it
takes
a
few
seconds
for
it
to
turn
on
(there
is
no
indication
during
device
recovery
process)
6.
Once
the
recovery
is
complete,
you’ll
need
to
pair
the
controller
to
your
PC
again
7.
After
connecting
with
host
and
HMD
device
will
update
firmware
to
latest
available
UPDATING
DEVICE
FIRMWARE
VR
CONTROLLER
firmware
will
be
updated
automatically
when
there
is
new
firmware
available
through
Windows
Update
service.
Firmware
update
will
happen
immediately
after
establishing
connection
with
HMD
and
controller
cannot
be
used
during
the
update.
Update
duration
depends
on
new
firmware
to
be
programmed
and
is
indicated
by
illuminating
LED
constellation
in
circular
blinking
pattern.
After
update
is
completed
device
re
‐
connects
to
host
PC
and
is
ready
to
use.
