pix515E startup problem

[himulalax]

I have a pix515E that was working fine. then it got in rommon a few days ago and now it shows nothing in hypertrm window except for that in the attachment. what is wrong with it and what can be done, can you tell?

[vmoopeung]

The issue may be dure Checksum error in file flash:/pix721.bin.No bootable image in flash due to a corrupted Flash memory

Complete these steps in order to erase the Flash memory:

1. Backup the PIX Firewall configuration and issue a show version command to see the activation key contained.

2. Reload the PIX Firewall and interrupt the boot sequence by pressing either the esc or break key. This takes you to monitor mode.

3. Once in monitor mode, run the TFTP server with the image in the root directory of the TFTP server

copy the image to the Flash from the TFTP server.