Need Firmware for JVC LT48C570 (Currys/PC World Exclusive Model) - T.MS3463S.711 Chassis

Model: JVC LT48C570
Chassis (main board, components): T.MS3463S.711
LCD Screen/Panel (if exist): LSC480 HN08-8

This is a Badged JVC for Currys and PC World, model not listed on JVC site.

Dead set with LED lighting, all voltages are correct and 'hash free' including the voltage converter on the main board. I suspect firmware corruption.

One peculiar thing seems to happen, sometimes the LED will flash just once after one minute producing a click from the speakers. The LED backlights are OK as tested on a LED tester.

Does anyone know where to get the firmware, Curry's are no help and JVC don't want to know since they don't list the model.

Thanks, Dave

is there a spiflash in UF1 position? or not?

No it's blank, thanks for your reply. Dave

Post the defective dump.

I can't access the dump at the moment, I ought to get a dump reader, a necessity these days.

UF1 Spi chip position is empty and uses a big nand chip underneath..... underside the main boarded is marked-:
PO No: 2010028801
P/N: 515Y35634M01
Des: T.MS3463S.711
SW: 20170810_220838.... would this be the software version?
I posted this info in case it threw any light?

Dave