Two "current" firmwares for the MR series?

[Dylan_YYC]

Good morning, 

Im sure i missed something, but why is there two version of the MR firmware labeled as stable in my dashboard? I have a mix of MR42, MR53 and MR74 in my environment all running 26.6.1 but i see that 27.5.1 is also listed. Should i be upgrading? 

Thanks!

Dylan.

[cmr · Accepted solution]

There is also 27.6 as a stable release candidate...

Only 802.11ac wave2 and newer APs can run the 27.x firmware so 26.x is there for older APs.

You have newer models that can run 27.x so you should be running 27.6 in my opinion as it gives you the newer features and appears stable.