@Buckleau Hello the problem appeared after a big power cut. No more kernel no more backup. Solution consider using the GPL code. In order to reinitialize the kernel but if you have another solution...

@adatmentes Thanks for the answer I think recompile the gpl code to see if it can work again.

@Thimozabi Hello I have exactly the same problem as you. But would it be possible to recover an image on another swicth of this model and to redo the installation via tftp if so which could put me a...