RFBA & RFBA Plus User Manual
Crown Broadcast
Page 37
Parameter
Note
Min
Typ
Max
Units
Voltage
9
12
14
V
dc
Current
1
A
dc
Figure 27 - Specifications
Software Updates
The RFBA has a USB port, as seen in
, which can be used for firmware updates to the device. The
firmware update must be loaded onto a flash drive at the root level. The flash filename will always be
‘image.cmg’. Each time the RFBA boots, it will look to see if there is a flash drive with the ‘image.cmg’
file located on it. If it is found, it will check the file to make sure it is intact and compare the software
revision level. If the software revision level currently in the RFBA is greater than or equal to the
‘image.cmg’ file, then the RFBA will boot as normal. If the ‘image.cmg’ file is newer, then the RFBA will
display that it is updating the firmware. It is important that the USB drive and the power are not
removed during this process. It usually takes 10-20 seconds to complete, and the RFBA will reboot once
the update is complete. It is possible to update the software to an older version by holding the enter
key when the power is connected to the RFBA. This will skip the version check and force the update.
Starting with firmware revision 1.03 there will also be an EEPROM update. This update is similar to the
flash update. The EEPROM filename must always be ‘image.cei’ on the USB drive. After the RFBA has
loaded the latest flash firmware update it will check to verify that it also has the correct EEPROM image.
If the EEPROM image is out of date then it will load the valid image from the USB drive. If the valid
image is not found, then the product will not fully operate, requiring you to update the image. Note
that it is critical that the firmware and the EEPROM revision must be compatible for the product to
operate as intended. EEPROM updates are rare and will work with multiple flash firmware updates. For
example, EEPROM v1.00 will work with flash version 1.00 thru 1.02. EEPROM v1.03 will work with flash
firmware v1.03 and higher.
USB flash drive requirements
The RFBA will accept most USB drives that conform to the USB specification and are formatted as FAT or
FAT32 (NTFS is not supported). The RFBA does not contain a full operating system such as Windows or
Linux and thus does not contain USB drivers from every USB flash drive manufacturer. While attempts
have been made to ensure compatibility with a large number of drives, there may be drives that simply
will not work.
