[c-nsp] ASA5520 can't read from flash

[Eimantas Zdanevičius]

Hi all,

i have a problem with my asa5520 internal flash. I cannot read any file 
from it.
After reboot asa cannot boot.

Is there a way to reformat flash and put new image on it?
Or can i use my external flash to run my asa?
Or is there other solution?

Thanks

Eimantas