Manual

Model 370A User Guide Issue 2, August 2019
Studio Technologies, Inc. Page 19
MODEL 370A
INTERCOM BELTPACK
tion. Then, after starting STcontroller, review
the list of identified devices and select the
specific Model 370A that interests you. Then
select Version under the Device tab. A page
will then display that will provide lots of use-
ful 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 ap-
plication firmware (embedded software) that
is utilized by the Model 370A’s processor
(microcontroller or MCU) integrated circuit
will be released to add features or to cor-
rect issues. Refer to the Studio Technologies
website for the latest application 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 370A
implements a USB host function that directly
supports connection of a USB flash drive.
The Model 370A’s MCU updates its applica-
tion firmware using a file named M370A.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 M370A.bin.
Studio Technologies will supply the applica-
tion firmware file inside a .zip archive file.
While the application firmware file inside
of the zip file will adhere to the naming
convention required by the Model 370A,
the name of the zip file itself will include
the file’s version number. For example, a file
named M370Av1r2MCU.zip would indicate
that version 1.2 of the application firmware
(M370A.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 loaded
into the processor’s flash memory. The pre-
cise 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 370A.
This will entail removing the Ethernet
connection that is providing PoE power.
2. Remove the cover from the Model 370A.
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.
3. Locate the USB connector on the main
circuit board. It’s near the call button.
Insert the prepared USB flash drive
into it.
4. Apply power to the Model 370A by con-
necting to a Power-over-Ethernet (PoE)
Ethernet source.
5. After a few seconds the Model 370A
will run a “boot loader” program that
will automatically load and save the new
application firmware file (M370A.bin).
This will take only a few seconds.
During this time period the call button’s
LED will flash slowly in alternating col-
ors. Once the entire process is over,
taking approximately 10 seconds, the
Model 370A will restart using the newly-
saved application firmware.