As of now, we are using WLC and Access Points as per the following make and model:Cisco Aironet 1815i Access PointModel: AIR-AP1815I-D-K9Software Version: 8.10.185.0Now, we have purchased new Catalyst 9100 Access Points:AP Model number: C9105AXI-DAft...

we are using Cisco Aironet 1815i Access Point as a WLC and Access point and need to be upgrade the firmware version 8.5.140.0 to 8.10.185.0. please suggest the step by step process that we need to be followed.