LG TV 28MT42VF-PZ , Stuck in LCN conflict

amennone
23/09/2020 23:38
Main board: 715G8524-MOF-B00-004K
Power: 715G7801-P01-W04-0H2H
Hi, the following TV is stuck in the LCN conflict
When I try to give the ok from the remote control, the TV turns off and on again. When no command is given, it remains lit on the channel.
I tried to update the firmware following the procedure of the LG site, but the usb key is not initialized.
Thanks for your suggestions .

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