Fat Shark
8
In Auto mode, the DVR will automatically record whenever a valid signal is present.
Note: you cannot manually stop recording in auto mode. Pressing record in auto mode will
just start a new file (also useful).
（
6
）
Channel Ext: expand HQ and LQ channel number to 12. This will be enabled by race
directors only that have purchased or been given permission to transmit outside the FCC license
free band.
（
7
）
About: check the current firmware information
Update firmware
The firmware of VTX and VRX are both updated by VRX, there are four firmware files for updating
（
1
）
HDZERO_TX.bin
（
2
）
HDZERO_RX.bin
（
3
）
HDZERO_VA.bin
（
4
）
BYTE_FROST.bin
The first one is used to update VTX, the last three are used to update VRX. When updating VTX
，
the VTX FW port needs to be connected to the VRX FW port via the supplied cable.
Copy the f/w to your SD card, and inset the SD card into VRX, it can update firmware
automatically once you power on. If there are all 4 F/W, it means need update 4 times to finish
updating all firmware. After each updating succeed,
the corresponding file in the SD card will be
deleted automatically and you need to power it on again to execute the new firmware. The
following figure is the process of updating after power-‐on. When update the above four files, the
words above the progress bar are as below:
（
1
）
“HDZERO_TX”
（
2
）
“HDZERO_RX”
（
3
）
“HDZERO_VA”
（
4
）
“Read File”
、
“Write File”
