I recently got the B+ model and I'm trying to switch over my Octopi to it from my B model. Finally got the Pi up and running after dealing with the rainbow screen issue and now I find the wireless doesn't seem to work. The post screen says I should be able to access with http://octopi.local but doesn't include an IP. SSH doesn't connect with octopi.local as it did before either. I'm not sure where I should go from here. I've set everything up as it was on the last setup. It appears that the wifi chip on this new Pi isn't functional. Is there any way to check this? Is there some other code I need to look at changing for network access?
Update from comments:
I was running Octopi/Raspbian on my RPI3 model B, and my intention was to just move the SD over to my RPI3 mB+. I figured out that I couldn't do that until I updated the build first before I moved it over. It loaded on the B+ but the wireless was no longer working. I plugged in an eth cable and that seemed to work ok but I need wireless to be running for this particular application.
Octopi doesn't have a gui (at least not on the Pi itself) so you can't just go to the wireless icon and choose your ssid from a list and log in. You have to go to the network file and enter it all manually. This was already done when it was initially running on the model B. I guess I just expected it to be running when I moved it over to the B+. All I did was update the software and move the SD over to the B+. I don't imagine any coding needs to be done for it to work on the B+.