I've made the soldering job again...
This is the final result (please be comprehensive, i know it's only acceptable... but really can't do better :/ )
Apparently all work good... but then i noticed this...
https://streamable.com/jruzvj
As soon as I move the board of the sx core, the chip turn off together with the screen... :/
It seems that my unit is defective, the ribbon seems to have some false contacts...
Sometimes the chip gives me even "white led", which means bad communication with the nand...
Sometimes my switch even booted from the SYSNAD with the chip still technically connected...
What am i supposed to do?
The chip has worked with no problem for 24 hours and then this...