Appendix A – Upgrading the Modem’s
Firmware
Your
modem
is
controlled
by
semi
‐
permanent
software,
called
firmware
,
which
is
stored
in
flash
memory.
Firmware
is
nonvolatile;
that
is,
it
remains
stored
in
memory
when
the
modem
is
turned
off.
However,
it
can
be
changed
by
either
the
manufacturer
or
the
user
as
bugs
are
fixed
or
new
features
are
added.
Since
the
firmware
in
your
modem
is
stored
in
flash
memory,
you
can
upgrade
it
yourself
in
a
few
minutes
by
using
the
following
procedures.
Upgrade
Overview
The
upgrade
procedure
consists
of
the
following
steps,
which
are
described
in
greater
detail
in
the
following
sections.
1.
Identify
the
model
number
and
firmware
version
of
your
modem.
2.
Identify
the
current
version
of
the
firmware
(you
can
view
this
on
the
Multi
‐
Tech
Web
site).
If
your
modem
already
has
the
current
firmware,
there
is
no
need
to
update
it.
3.
Download
the
upgrade
file
and
the
appropriate
Flash
Wizard
for
your
modem.
4.
Install
the
Flash
Wizard
and
extract
the
firmware
.HEX
file
from
the
file
you
downloaded.
5.
Document
and
clear
your
stored
parameters.
6.
Upgrade
the
modem’s
firmware
using
the
.HEX
file
and
the
Flash
Wizard.
7.
Restore
your
parameters.
Identifying
the
Modem
Firmware
You
must
know
the
model
number
and
firmware
version
of
your
Multi
‐
Tech
modem
to
know
whether
or
not
you
should
update
it.
1.
Run
your
favorite
terminal
program.
If
you
are
using
Windows
95
or
above,
you
can
use
Windows
HyperTerminal.
2.
In
the
program’s
terminal
window,
type
AT&F
.
Even
if
you
cannot
see
the
AT&F
command
on
your
screen,
be
sure
to
type
it
completely,
and
then
press
E
NTER
.
If
the
modem
does
not
respond
with
OK
,
repeat
the
AT&F
command.
3.
Now
type
ATI
,
press
E
NTER
,
and
record
your
results.
The
model
number
and
firmware
version
should
appear
similar
to
that
shown
below.
LT
V.92
1.0
MT9234ZBA
‐
V
‐
V92
Serial
Voice/Data/Fax
Modem
Version
1.25k
Identifying
the
Current
Firmware
Version
Identify
the
current
version
of
the
firmware
at
the
Multi
‐
Tech
Web
site.
If
your
modem
already
has
the
current
firmware,
there
is
no
need
to
update
it.
1.
Using
your
favorite
Web
browser,
go
to
http://www.multitech.com/en_US/SUPPORT/Updates/Firmware/.
2.
Scroll
down
to
your
modem
model
number.
28
Multi
‐
Tech
Systems,
Inc.
MT9234ZBA
‐
Series
User
Guide