If you have a valid SmartNet, the WiSM2 will be replaced and they will give you instructions on replacing the license on the new WiSM2. If you don't have SmartNet and you are just trying to replace the WiSM2 that no longer functions, then you will not be able to transfer the license because the license usually is tied to the SmartNet contract. You can purchase a WiSM2 HA SKU for N+1 or AP SSO functionality so that you don't need to purchase licenses. That might be a better way to go unless you have SmartNet and can get the other unit replaced for free.
As long as the other unit has 50 or more AP license, you can setup that as an HA WLC in an AP SSO design.
Take ken a look at the WLC HA N+1 Guide and the WLC HA AP SSO Guide.
Transferring Crash file from standby: Login to the Active WLC in HA.
From CLI: (Cisco Controller) >transfer upload datatype crash (Cisco
Controller) >transfer upload filename (Cisco
Controller) >transfer upload mode tftp (Cisco Controller) >transfer
This is the start of a display filter cross reference between Wireshark
and OmniPeek. The 1st installment is a table of advanced filters. More
filters will be added as time allows. It is a living doc, so check back
for changes every so often Please feel f...
I have created a Powershell script to automatically add a Wireless Guest
User on Cisco WLCs. (tested on 2500 Series) The script should be
completely self explanatory. Prerequisites: Powershell SNMP Module
(Install-Module -Name SNMP) SNMP Write Access to y...