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New Member

Is there any issue to download via TFTP a new image in cisco 3660?

I am using IOS :c3660-is-mz.122-2.XK.bin in a cisco 3661 and want to download via TFTP the image c3660-is-mz.122-10.bin. After sending copy tftp command, give remote IP address, source file name and destination file name, the tftp window I opened is closed with a message that there was an error and in the telnet connection I receive a message that the file is an invalid executable file for the unit.

After that, the operation is aborted.

Is there any issue with the IOS I have to proceed with tftp downloads?

I need to download via TFTP because cannot suspend srvice for around 4 hours if I do it via x modem.

This is my show ver:

Central#sh ver

Cisco Internetwork Operating System Software

IOS (tm) 3600 Software (C3660-IS-M), Version 12.2(2)XK, EARLY DEPLOYMENT RELEASE


TAC Support:

Copyright (c) 1986-2001 by cisco Systems, Inc.

Compiled Thu 25-Oct-01 22:04 by ealyon

Image text-base: 0x600089C0, data-base: 0x61500000

ROM: System Bootstrap, Version 12.0(6r)T, RELEASE SOFTWARE (fc1)

ROM: 3600 Software (C3660-IS-M), Version 12.2(2)XK, EARLY DEPLOYMENT RELEASE SOF

TWARE (fc1)

Central uptime is 54 minutes

System returned to ROM by power-on

System image file is "flash:c3660-is-mz.122-2.XK.bin"

cisco 3660 (R527x) processor (revision 1.0) with 83968K/14336K bytes of memory.

Processor board ID JAB05468024

R527x CPU at 225Mhz, Implementation 40, Rev 10.0, 2048KB L2 Cache

Channelized E1, Version 1.0.

Bridging software.

X.25 software, Version 3.0.0.

SuperLAT software (copyright 1990 by Meridian Technology Corp).

Primary Rate ISDN software, Version 1.1.

3660Chassis type: ENTERPRISE

1 Ethernet/IEEE 802.3 interface(s)

1 FastEthernet/IEEE 802.3 interface(s)

2 Serial network interface(s)

8 Low-speed serial(sync/async) network interface(s)

1 Channelized E1/PRI port(s)

DRAM configuration is 64 bits wide with parity disabled.

125K bytes of non-volatile configuration memory.

24576K bytes of processor board System flash (Read/Write)

Configuration register is 0x2102

I´ll appreciate any suggestion.

New Member

Re: Is there any issue to download via TFTP a new image in cisco

Have you tried renaming the file, also make sure your outbound path is setup


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