Sony FCB-EV7517 Technical Manual page 22

Update Procedure
Enter Maintenance Mode
HOST
CAM_Power off
8x 01 04 00 03 FF
Enter
Standby
Mode
ACK, COMP
8x 01 04 00 0C FF
ACK, COMP
8x 01 04 00 0D FF
ACK, COMP
Enter
Maintenance
8x 01 04 00 13 FF
Mode
ACK, COMP
8x 01 04 00 04 FF
ACK, COMP
8x 01 04 00 20 FF
ACK, COMP
* When power is off during this period, camera will be broken.
FCB
* Writing of Writer program
in FlashROM
REBOOT AUTOMATICALLY
Maintenance Mode
HOST
Firmware Update
Ready Message
"reprogram ( )" + CR
Sending Firmware Binary
with X modem protocol
Sending firmware
* When power is off during this period, camera will be broken.

Basic Functions
FCB
CODE NAME+
VERSION + CR
"ready" + CR
"receive"+ CR
* Writing in FlashROM
'reboot' + CR