Mar 27, 2026 - For details about updated CVE-2025-53521 (BIG-IP APM vulnerability), refer to K000156741.

Forum Discussion

Frank_Nsubuga_3's avatar
Frank_Nsubuga_3
Icon for Nimbostratus rankNimbostratus
Oct 14, 2018

Upgrading from 12.1.3.7 to 13.1.1.1 error message - "double quotes are not balanced"

Hi,   I'm trying to upgrade a BigIP and keep getting this error message.   I was able to go from 11.6 to 12.1, but 13.1 doesn't seem to like the config file being applied.   Full error messa...
application delivery
big-ip
TMOS
Frank_Nsubuga_3's avatar
Frank_Nsubuga_3
Icon for Nimbostratus rankNimbostratus
Nov 14, 2018

For anyone seeing this or experiencing the same issue, the problem is apparently there was a change in version 13 for how iRules are processed through CLI when the BIGIP.conf file is read in.

 

To complete the upgrade we had to manually remove iRules from the bigip.conf file, perform the upgrade and load the configuration in without the iRules, then put them back into the BigIP.conf file.

 

https://cdn.f5.com/product/bugtracker/ID668041.html

 

The above shows a bug related to the issue, but applying the recommended fix didn't work for us.