IOS restore problem in ASA5520

[shahid_duet]

Dear boss

I have erease flash somehow as i can to boot asa 5520. Then i go rommon and have tftp.Then login.

I got all my configuration. Then i do :

ASA5520(config)# boot system disk0:/asa708-k8.bin
ASA5520(config)# asdm image disk0:/asdm-508.bin
ASA5520# write memory
ASA5520# reload

Then no boot file found and some message like undable to boot......

What can i do now ? 
how to boot ? 

Thanking You 
shahid

[varrao · Accepted solution]

Hi Shahid,

Try loading the image from rommon mode:

Step1 Power  off the adaptive security appliance, and then power it on.

Step 2 During  startup, press the Escape key when  you are prompted to enter ROMMON mode.

Step3 In  ROMMOM mode, define the interface settings to the adaptive security appliance,  including the IP address, TFTP server address, gateway address, software image  file, and port, as follows:

rommon #1> ADDRESS=10.132.44.177

rommon #2> SERVER=10.129.0.30

rommon #3> GATEWAY=10.132.44.1

rommon #4> IMAGE=f1/asa800-232-k8.bin

rommon #5> PORT=Ethernet0/0

Please make sure that the Tftp  server is connected to the interface.

Step 5 To  validate your settings, enter the set command.

rommon #6> set

Step 6 Ping the  TFTP server by entering the ping  server command.

rommon #7> ping server

Step 7 Load the  software image by entering the tftp command.

rommon #8> tftp

Step 8 Reload  the security appliance to run the new image.

rommon #9> reload

Once the ASA comes up, check "show flash" the image should be there in flash, and then set the boot parameters.

HTH.

Thanks,
Varun

[shahid_duet]

Thanks varun