Manual

Issue 2, August 2019 Model 371A User Guide
Page 18 Studio Technologies, Inc.
MODEL 371A
INTERCOM BELTPACK
the version number has been displayed
the call button can be released and nor-
mal operation will begin. As an example of
what would be a typical application firm-
ware display, if the channel 1 talk button
“flashes” once followed by the channel 2
talk button “flashing” two times this would
indicate that application firmware version
1.2 was present in the Model 371A.
A selection in the STcontroller software
application allows the Model 371A’s ap-
plication firmware version to be identi-
fied. Connect the Model 371A unit to the
network and let it connect and start to
function. Then, after starting STcontroller,
review the list of identified devices and
select the specific Model 371A that inter-
ests you. Then select Version under the
Device tab. A page will then display that
will provide lots of useful information. This
includes the application firmware version
and well as details on the firmware present
in the Ultimo integrated circuit.
Application Firmware Update
Procedure
It’s possible that updated versions of the
application firmware (embedded software)
that is utilized by the Model 371A’s pro-
cessor (microcontroller or MCU) integrat-
ed circuit will be released to add features
or to correct issues. Refer to the Studio
Technologies website for the latest appli-
cation firmware file. The unit has the ability
to load a revised file into the MCU’s non-
volatile flash memory by way of a USB
interface. The Model 371A implements a
USB host function that directly supports
connection of a USB flash drive. The
Model 371A’s MCU updates its application
firmware using a file named M371A.bin.
The update process begins by preparing
a USB flash drive. The flash drive doesn’t
have to be empty (blank) but must be in
the personal-computer-standard FAT32
format. Save the new application firmware
file in the root directory with a name of
M371A.bin. Studio Technologies will sup-
ply the application firmware file inside a
.zip archive file. While the application firm-
ware file inside of the zip file will adhere
to the naming convention required by the
Model 371A, the name of the zip file itself
will include the file’s version number. For
example, a file named M371Av1r2MCU.zip
would indicate that version 1.2 of the appli-
cation firmware (M371A.bin) is contained
within this zip file.
Once the USB flash drive is inserted into
the USB interface, located on the main cir-
cuit board under the cover, the unit must
be powered off and again powered on. At
this point the file will automatically be load-
ed into the processor’s flash memory. The
precise steps required will be highlighted
in the next paragraphs of this guide.
To update the application firmware file
follow these steps:
1. Disconnect power from the Model 371A.
This will entail removing the Ethernet
connection that is providing PoE power.
2. Remove the cover from the Model 371A.
Begin by removing the four Phillips-
head machine screws (#1 screw driver
tip), two per side. Be certain to save the
screws so that re-assembly will be fast
and painless. Then carefully slide the
cover forward to separate it from the
level controls and buttons and then lift
it off.