HELP Philips 55PFL8007K/12 , Errore 53

Hi, TV is not on.
The voltages I read are 3v3s = 3v3 and STB = 3v1.
if I disconnect the cables from the main-board to the power supply, the LEDs do not light up.
I reprogrammed the spiflash 7CT3 (M25P10), on pin 2 of the 1M95 connector the power supply went to a low logic level, from 3v1 to 0 volts. The 12 volts, now, is present, like the other power supplies on the mainboard. The front indication led continues to remain off. The remote control and the power buttons on the keyboard do not respond to commands. In fact, if I try to turn off the TV from the keyboard or remote control on pin2 of 1M95 it always remains low logic level.
If I leave the TV set for about 2 minutes with the power plug inserted, on the pin2 of 1M95 the 0 volts power supply switches to 3V1, the 12 v (logically) is no longer present and the red led on the front of the TV blinks 2 times.
activating the SDM service procedure the LED shows 5 slow flashes and 3 fast flashes, error 53
With RT809F I auto this log.
I unsoldered from the 7GG2 = MP25P40 motherboard. Without 7GG2, I put the TV into operation. Now the TV does not fail anymore. (Although it still does not work)
Inserting a USB stick in the USB port of the TV now the LED on the USB pen flashes and is recognized (which had never happened before). I connected RT809F on the service socket, I connected the register, without USB stick and with USB pen inserted in the USB port.
Is it possible to have files for MP25P40? On the layout of this integrated circuit I read FPGA - POWER & CONTROL.
Nand problems?
Dear colleagues, let us suppose that the nand is corrupt or defective. My question to those who have more skills than me on this TV is the following: why do I start reading from the USB stick with 7GG2 = 25P40 not present on the motherboard?
Thank you and good job to everybody .