Hi all!!
In our 3660 cisco router IOS has got corrupted(FLASH IOS) & Iam not able to
boot thro. ROM also (ROM BOOT not working).The only mode which is working is
ROMMON mode.When I try to load the IOS thro XMODEM I gt the following
error(In ROMMON mode)


rommon 1 > xmodem c3660-js-mz.120-7.XK2.bin..bin
Do not start the sending program yet...
         File size           Checksum   File name
   8059392 bytes (0x7afa00)   0x7520    c3660-js-mz.120-7.XK2.bin..bin

WARNING: All existing data in flash will be lost!
Invoke this application only for disaster recovery.
Do you wish to continue? y/n  [n]:  y
Ready to receive file c3660-js-mz.120-7.XK2.bin..bin ...
BB0BB0
Timeout waiting for data - aborting download...
rommon 2 > confreg 0x2101


rommon 3 > reset

System Bootstrap, Version 12.0(6r)T, RELEASE SOFTWARE (fc1)
Copyright (c) 1999 by cisco Systems, Inc.
C3660 processor with 65536 Kbytes of main memory
Main memory is configured to 64 bit mode with parity disabled

loadprog: error - on read during ELF program load
requested 10471860 (0x9fc9b4) bytes, got 8039940 (0x7aae04)
boot: cannot load "flash:"

System Bootstrap, Version 12.0(6r)T, RELEASE SOFTWARE (fc1)
Copyright (c) 1999 by cisco Systems, Inc.
C3660 processor with 65536 Kbytes of main memory
Main memory is configured to 64 bit mode with parity disabled

rommon 1 > b
loadprog: error - on read during ELF program load
requested 10471860 (0x9fc9b4) bytes, got 8039940 (0x7aae04)
boot: cannot load "flash:"

So as u see in the above output I hv tried XModem & also ROMboot but without
any success.Also I tried loading the backup of the IOS for 3660 which i
had,thro. TFTP server by giving the following command

     b c3660-js-mz.120-7.XK2.bin..bin:192.10.10.20

where 192.10.10.20 is the address of the TFTP server but no use.

If any one of u hv faced similar problem,Can u pl. mail the solution with
detailed sequence of steps to solve it.

Thanx & warm regards
ss2001




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