after many tries:
file 1 has too many bad blocks , nand is unusable
after more tries:
program running.
select + start + reset,
programs all the slots in first bar, then disconects, and to the right it says 1,
every time you do the same it says 2, 3, etc
dont't know whick squares have to be checked
well trying everything one is back to life
another to go...
this one only begins the procedure with reset+start
the one that got alive had black screen, was completely dead
the one with white screen does all the work, then gets white screen again?
someone can clarify the options? 
