JVC LT-40VF52M, 17MB211S, standby LED flashes, it doesn't turn on

I copied the spi flash and nand from a working board of the same model, but it still won't turn on and the standby LED flashes 13 times. Before reprogramming, the LED also flashed and the TV wouldn't turn on. It also wasn't possible to upload software via USB. I read this via UART: 
NO
SPI ID:0xEF4015

SPI type:0x01
Spi Su2:0x02
Read back data from SPI....
P:0000
B:1E
sysidx:0CF9
Pwr on:01

RstCode:00000000
last power when ac power: 01

PowerOnEvent: 0x01
Read back data from SPI....
P:0000
B:1E
sysidx:0CF9
Pwr on:00

PowerOnEvent: 0x24
Read back data from SPI....
P:0000
B:1E
sysidx:0CF9
Pwr on:00

PowerOnEvent: 0x24
Read back data from SPI....
P:0000
B:1E
sysidx:0CF9
Pwr on:00

PowerOnEvent: 0x24
Read back data from SPI....
P:0000
B:1E
sysidx:0CF9
Pwr on:00

PowerOnEvent: 0x24