Hi,
I also ran into this problem. I had to remove the upgrade lock even though I never tried to upgrade because the Readiness Check failed. Here is my Readiness Check error trying to upgrade from 7.0.0 to 7.0.6.
****************** FAILURE SCRIPT: 1...
This document -> https://www.cisco.com/c/en/us/td/docs/security/firepower/ftd-api/guide/ftd-rest-api.pdf up to 7.0 2021 stills says the limit is 1000 on the bottom of p. 29. Multiple queries is still the answer.
TAC told me EPC is not supported on the 2960X and other switches. Even though the 2960X does not appear on the list of products on this bug -> https://bst.cloudapps.cisco.com/bugsearch/bug/CSCui33787, it appears to also apply to the 2960X. On a sid...