A FlexConnect remote office deployment is using five 2702i APs indoors and two 1532i APs...

When using FlexConnect Smart AP Image Upgrade without a configured FlexConnect Master AP, the WLC will transfer the image to one indoor AP and one outdoor AP separately. Each AP model needs a different firmware image due to hardware differences. Therefore, there will be two image transfers from the WLC: one for the 2702i APs and another for the 1532i APs.

References :=

CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide

Cisco documentation on FlexConnect Smart AP Image Upgrade