Unable to log onto Switch after Firmware update

[lee.pearce]

Hi All

I have a CISCO SF250 48HP switch, on Friday i updated the firmware to the latest 2.5.8.15 and since then i have been unable to log onto the switch, we seem to be having the odd network issue but mostly its working, but i can't log onto the switch to investigate and fix. Is there a way to fix the password issue without having to do a factory reset or is the factory reset the only option

Any help given would be much appreciated

Regards

Lee

[marce1000]

 - What error do you get when trying to login ? Where credentials and configuration  sufficiently saved before upgrading ? Was there an accidental change of credentials without saving configuration before upgrade ?

 M.

[lee.pearce]

No configuration or credentials were changed, i logged on updated the firmware, the switch rebooted and when i tried to log back in it tells me the username or password is invalid. I did read an article where someone had the same issue but with a slightly different switch and it was because they had special characters in their password. our password has special characters init so was wondering if that was the cause

[marce1000 · Accepted solution]

 - Could be, I see no other option then factory reset, restore config (if backup was made) , or configure from scratch.

 M.

[lee.pearce]

Thanks for the help Marce

[cyberconsultants]

Have you tried the default credentials?

[lee.pearce]

i did yes but same issue

[lee.pearce]

Is it possible to connect to the switch with the console cable and reset the password if the current password has stopped working?