[c-nsp] PIX515 problems

[Ravi Patwari]

Hi All,

I have a PIX515 with 2 ethernet ports which was working perfectly but since
last two days keep rotating through a boot cycle and showing as under:
==========================
Copyright 1985-1998 Phoenix Technologies Ltd.
All Rights Reserved

Build Time: 04/27/99 17:08:34
Polaris BIOS Version 0.09
CPU = Pentium with MMX  200 MHz
640K System RAM Passed
63M Extended RAM Passed
0512K Cache SRAM Passed
System BIOS shadowed

Cisco Secure PIX Firewall BIOS (4.0) #0: Thu Mar  2 22:59:20 PST 2000
Platform PIX-515
Flash=i28F640J5 @ 0x300

Use BREAK or ESC to interrupt flash boot.
Use SPACE to begin flash boot immediately.
Reading 2032128 bytes of image from flash.
64MB RAM
imgsum_config: sumval(0x2edc) md5(0x46503f01 0xce116d18 0x19bb45db
0x082a6fc5)
imgsum_verify: chksum(0x   0) md5(0x83bdfc83 0x3610ddec 0x475fda4e
0x78752f30)
Panic: kernel - The checksum verification for this image failed.
==========================
The version is 5.2(3) which I can see from a copy of the old config I have.

Please advise what could be the problem and how do I fix the same.

Thanks a lot in advance.

Regards
Ravi