on the last two hours i have tryed so many ways.
From the forum link i have redownload two different firmware:
starfish-dvb-secured-mtka5lr-31.bighorn.mtka5lr-3163-03.21.40-prodkey_nsu_V3_SECURED[1].epk
and:
starfish-dvb-secured-mtka5lr-31.bighorn.mtka5lr-3161-03.21.30-prodkey_nsu_V3_SECURED[0].epk
According the "zagotovki" folder to my correct model LF590V-ZA
When i have all apparently configurated i have try to check upgrade from my TV and i see correctly the message says "Found NSU whit 03.21.xx (when xx it's 30 or 40) " but when try to launch the installation apparently the download it's not start and i obtain immediatelly errors says "Impossible to run the update" or somethings similar.
How i need to check to try to resolve this issue?
*EDIT*
OMG..wait a moment it's works!!
Now i have read correct all procedure:
For the model from 2014 to 2016 i have read on stock firmware LG as add a block not to do the downgrade.
I know it's avaiable a test firmware 3.31.00 whit this block removed..... i have download this and installed by NSU method.Now need to reboot my TV for complete the setup and problably after that and from this firmware i can reinstall the 3.21.40 to see what's appened.
*2nd EDIT*
Another OMG!! It's works....after the temporary installation of 3.31.00 i have reinstalled by NSU correctly the 3.21.40 firmware!!
I have reinstall the 3.21.40 picked from "local" folder -> "03_21_40_AU_SG_ZA" From the file "HE_DTV_W15L_AFAAABAA" i have download the correct epk and installed.Now i need to reboot another time my tv to see what's appened.
*3rd EDIT*
AND OOOOOOOOOOOOOOHHHHH YEAAHHHHHHHH!!!
It's WORKS!!! 3.21.40 correctly reinstalled and i have tryed and BOOOOOOMMM!! The ISSUE apparently it's been disappears!!!!! NOW i can open the settings menu whitout any trouble also when i first time i turn on the TV!!
YEEEEAAH....and the S**HIT LG Italian assistence he wanted me to bring the TV to a service center...............
now hopefully the problem won't come back out in the next few days or weeks....meanwhile, it is almost 6 in the morning in Italy and i can go to sleep whit a finally full working tv system
