Upgrading 3750x stack with Network Assistant weird behaviour

[janit]

Hi guys. I've been going through upgrades of number of stacks of 2960s and 3750x using Cisco Network Assistant. I know, I'm lazy. Most worked out OK. But this one main stack did something strange. After uploading .tar to it one of three switches would reboot right away without me clicking yes to reload and load the new let's say E9 IOS. The others show version mismatch. Tried it twice and same thing happen. Had to manually upgrade. It just bugs me what would cause this behavior. I know 3750x are ancient but  ...

Any tips ?

Regards

[balaji.bandi]

I have seen some time back with Prime same issues around, i know this is not the best method to upgrade manually, but i prefer to do that way manually and you have full control.

Since this programms some time do not give enough information to look.  what is the process happening background only cisco support TAC can dig for you.

i follow below document ( i know you may have already in place and you did manual upgrade).

https://www.cisco.com/c/en/us/support/docs/switches/catalyst-3750-series-switches/64898-upgrade-3750-stack.html#mupgrade

[superego]

I usually do manual upgrade using Cisco Prime as the FTP server since we configured our network devices FTP UN/PW.
You can use secured protocol like scp, tftp if your company requires you.

With auto reload:
archive download-sw /overwrite /force-reload ftp://x.x.x.x/c3750e-universal-tar.xxx-x-Ex.tar

With scheduled reload:
archive download-sw /overwrite ftp://x.x.x.x/c3750e-universal-tar.xxx-x-Ex.tar
reload at 01:00 11 March (e.g.)

[janit]

I did that and it worked. I was just intrigued why would this happen on one of few stacks. Thank you for replies.