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Getting error while upgrading 9300 stack switch in install mode

Any solution for below error?


#sh ver | i IOS
Cisco IOS XE Software, Version 16.09.04
Cisco IOS Software [Fuji], Catalyst L3 Switch Software (CAT9K_IOSXE), Version 16.9.4, RELEASE SOFTWARE (fc2)
Cisco IOS-XE software, Copyright (c) 2005-2019 by cisco Systems, Inc.
All rights reserved. Certain components of Cisco IOS-XE software are
documentation or "License Notice" file accompanying the IOS-XE software,
or the applicable URL provided on the flyer accompanying the IOS-XE
ROM: IOS-XE ROMMON
1 64 C9300-48U 16.9.4 CAT9K_IOSXE INSTALL
* 2 64 C9300-48U 16.9.4 CAT9K_IOSXE INSTALL
3 64 C9300-48U 16.9.4 CAT9K_IOSXE INSTALL
4 64 C9300-48U 16.9.4 CAT9K_IOSXE INSTALL

#dir flash: | i .bin
139266 -rw- 705009898 Feb 7 2020 16:33:12 +00:00 cat9k_iosxe.16.09.04.SPA.bin
139293 -rw- 1017587860 Feb 7 2023 16:37:45 +00:00 cat9k_iosxe.17.06.04.SPA.bin


#install add file flash:cat9k_iosxe.17.06.04.SPA.bin activate commit
% No connections to Shell Manager available for processing the command

4 Replies 4

Leo Laohoo
Hall of Fame
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Please read the attached file.  I have made the document easy-to-understand and I have thoroughly tested and applied the method for the last 5 years without a single failure.  

Hi Leo,
i have already refer your shared document but still facing the same issue... i am expecting solution on highlighted error below.


#$tform software package install switch all file flash:cat9k_iosxe.17.06.04.SPA.bin on-reboot new auto-copy verbose
% No connections to Shell Manager available for processing the command


@nileshshankarshete wrote:
% No connections to Shell Manager available for processing the command

CSCvu60833, CSCvp81958.

No other option.  Reboot the stack and re-run the Install Mode command.

Yes, that's the only option...i have also seen same on cisco's bug solution. 

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