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Over-the-Air Reprogramming
Over-the-Air Reprogramming section allows the current firmware image running on a master radio to be
broadcast over the air to the entire network of TransNEXT remotes. The operation relies on
unacknowledged broadcast transmission with variable repeats.
NOTE
Varying RF environmental conditions may prevent Over-the-Air Reprogramming from
successfully updating all devices. The operation may be repeated as needed to attempt to pick
up units missed during a prior session. If a remote unit has a particularly poor signal OTA
reprogramming may be impractical and it may be necessary to reprogram the device locally.
From the CLI the command is app_ota. Help is as follows:
>help app_ota
method <active|passive>
reboot <true|false>
start <speed>
<speed> [robust, slow, medium, fast, turbo]
stop
The command can be used at the master or remote to query current status of over-the-air transfer.
>app_ota
Status: Inactive
The command can be used query default settings as follows:
>app_ota method
Passive
>app_ota reboot
True
Setting the method and reboot parameters are done as separate lines prior to kicking off a transfer.
Method indicates if the TransNEXT will send intrusively or non-intrusively. The method argument is
"active" or "passive". Passive is non-intrusive while Active may cause some interference with payload
data polling.
>app_ota method passive
>OK
Reboot indicates if the remote TransNEXT units will automatically reboot at the end of a transmission
sequence when the new firmware image has been properly received. The reboot argument is "true" or
"false".
>app_ota reboot true
>OK
Prior to initiating the Broadcast OTA session, determine the transmission mode setting based on the
characteristics of the connected network.
For weak signal networks "robust" is recommended and provides the best chance of hitting all units, but it
may take a week or more for the system to update. For smaller networks with excellent signal strength
other options may work well and complete much faster.
48
OTA App transfer mode
OTA App reboot after update
Start OTA App reprogramming
Stop OTA reprogramming
MDS TransNEXT Technical Manual
MDS 05-7280A01, Rev. A
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