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New Member

Upgrading 1841 router for ssh

I am trying to upgrade my Cisco 1841 router for use with SSH. I am wondering what are the requirements needed, and which version should I install on the router?


Cisco IOS Software, 1841 Software (C1841-IPBASE-M), Version 15.0(1)M4, RELEASE SOFTWARE (fc1)
Technical Support:
Copyright (c) 1986-2010 by Cisco Systems, Inc.
Compiled Thu 28-Oct-10 15:40 by prod_rel_team
ROM: System Bootstrap, Version 12.4(13r)T, RELEASE SOFTWARE (fc1)
Router uptime is 21 minutes
System returned to ROM by power-on
System image file is "flash:c1841-ipbase-mz.150-1.M4.bin"
Last reload type: Normal Reload
Cisco 1841 (revision 7.0) with 235520K/26624K bytes of memory.
Processor board ID FTX145002U9
2 FastEthernet interfaces
4 Low-speed serial(sync/async) interfaces
DRAM configuration is 64 bits wide with parity disabled.
191K bytes of NVRAM.
63808K bytes of ATA CompactFlash (Read/Write)
License Info:
License UDI:
Device#  PID SN
*0    CISCO1841             FTX145002U9     
Configuration register is 0x2102
Super Bronze

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You'll need a crypto image.

New Member

Do you know which IOS I need

Do you know which IOS I need to use?

New Member

You need to download a K9

You need to download a K9 image like this one:



Or you can move to 15.1(4)M10 which is the latest for this platform.


VIP Purple

[+5] to Paulo and Joseph. Hi

[+5] to Paulo and Joseph.


Hi Wilson,


you can also run Feature Navigator tool to find the image using Search by Platform option[1841 in your case] , then , Major release/Release/Feature Set