Renaul media nav 4.0.3 read and write emmc

[pzidecode]

Hi friends, I need a good connection to read in-circuit memory that's working properly, and I want to install new firmware.
But the problem I'm having is that when it's writing, the progress bar stops and just stays there.
I think it's because the microcontroller is disabling some memory pin.
Can you help me find a secure connection so I can read and write without problems?

i conect in circuit , clock , cmd , d0 , gnd and board of radio to vcc 12v

thanks in advance

[RadioChiP]

Try cmd pin cut jumper