Thanks, i have think to this idea but i doenst found the 2.3 SXOS T_T
auto
I Found it ! I try all of this, i be right back (edit post)
EDIT: The problem is always here 2.3 or not T_T
I update also my Nand in 6.2 but always the emunand doesnt boot, i dump the new Nand from the 6.2 (efuses)...