Powerbeam should be bricked by my mistake, but it isn't? Advice needed.

Last night we converted 2 PowerBeams:  M5-300 & M5-400.

The 300 went fine, but in my fatigue we made a crucial error on the 400.  At the point we were rolling back from AirOS 5.6.2 XW, I accidentally selected the new AREDN firmware and installed it.  It's my understanding this is a likely bricking scenario.  

I wasn't able to connect to it immediately, but since the LEDs indicated it booted the AREDN firmware I tried the reset button and a prayer.  It worked and I was taken to the initial screen.

Being tired and already making mistakes I decided to leave it alone and ask you guys about it today.  

Since I can view the initial setup screen am I good to continue on or will I encounter some trouble later?  Is there some other precaution I need to take?  I jotted this down in case it would help:  

free space 1864 kb
/tmp 30440 kb
memory 36756 kb
It gave me an IP of 192.168.1.9.

How should I proceed?  Can I rejoice that I dodged a bullet or am I not yet out of the woods?  

Thanks in advance for all of your help!

-neal