Migrate AP55c from UTM9 to XG

Question

Hi 
 I have a pair of AP55c AP's that I'm evaluating and would like to try them under XG. 
 I seem to remember reading somewhere that once the AP55 is updated with the XG firmware, they can't be used on UTM9 again. 
 I can't find the post again - was I imagining it? 
 
 Is there a general consensus on the Sophos AP's? We normally use Ubiquiti AP and UTM9 F/W but it would be nice to have a single controller managing both F/W and AP's. 
 The main downside I've seen so far though is that the Sophos APs go offline when the F/W is unavailable. Don't understand why this would happen if they were configured as bridge to LAN... 
 
 Thanks!

lferrara · Accepted Answer

Darren, 
 I tested AP10, AP55 on XG and then moved back to UTM without issue. I did not test the AP55c but access point should be intelligent to download the right firmware (UTM or XG) without any issue. 
 AP are controlled by XG/UTM using a special ping mechanism, so if the controller goes down, the AP does not work anymore. 
 Hope this helps! 
 Thanks

lferrara · Answer

Darren, 
 yours point of view is a nice idea. They can improve this aspect by allowing the Admins to decide what to do if the AP does not reach the XG. Also I would like to have the possibility to configure static IP for AP (this is another idea). 
 Open a feature request on http://ideas.sophos.com/forums/330219-sophos-xg-firewall and I will give a vote for having "always on" feature on Sophos AP. 
 Thanks