YS-S4 Multi-rotor Autopilot User Manual V1.4
26
5)
Click
“Open”
button,
select
upgrade
procedure
file“s4v2
‐
BiaoZhun
‐
20140115
‐
v021.bin”
6)
The
program
will
auto
‐
upgrade
when
the
upgrade
procedure
is
selected.
7)
Power
‐
off
the
autopilot
when
it
says
“upgrade
successful”.
Quit
the
firmware
upgrade
software
and
power
off
the
autopilot.