No SW or HW updates are necessary. The ratified 802.11n standard introduces no mandatory features beyond what was in Draft 2.0. The Wi-fi Alliance started certifying 11n based on Draft 2.0 and has determined that all existing certified products (based on Draft 2.0) are grandfathered into certification based on the ratified standard.
The 1250, by default, was designed specifically for 802.11N in mind. What you need to do is to get the configurations correct to operate.
The latest firmwares that updates the APs are the 12.4(10b)JDA3 and 12.4(21a)JA1. The former upgrades the firmwares for both radio modules to version 2.00.22. The latter upgrades the radios further to 2.10.19. Now this is not just number. The upgrades (either one) allows the AP to operate both radios with only 15.4 watts of power. There's a "cost" associated to it and it's lower MCS rates.
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...