LG Zenith HCS5610 Installation And Operating Manual page 62

Reference: Software Version Check
Procedure to Check Software Version
The software version of the TV/STB may be checked by accessing the INSTALLER MENU. To do this, press the MENU button at least 10 times
until the menu display ceases to respond to MENU key presses.
Then, press "9", "8", "7", "6", "OK (Enter/Select)".
HCS5610XX PTC INSTALLER MENU
000 INSTALLER SEQ
UPN 000-000-000-000
PTC V1.00.000 CPU V1.01.00
Typical Installer Menu
P A G E 6 2
000
FPGA 09F1