Excellent question. I did some digging via SCP and finally found it.
But don’t get to excited you can’t copy files directly into it.
The repository is located in the following path:
There is a good write up on how to upgrade your software using the command line.
- the current version of the firmware.
Were the firmware uploaded via the APIC GUI? If this is true, the issue is related to defect CSCux40954. Please use ‘scp’ in APIC to copy the firmware into the controllers. Attached is the instructions: http://www.cisco.com/c/en/us/td/docs/switches/datacenter/aci/apic/sw/1-x/getting-started/b_APIC_Getting_Started_Guide/b_APIC_Getting_Started_Guide_chapter_011.html#concept_734A579133814A85813C9C5232BBE44C