these Elite receivers are too well made & vetted (not being the $299 variety) to have all these issues as normal problems.
you either have a TV - receiver HDMI incompatibility or a setup issue. The problem for us trying to help you with your setup is trying to communicate back & forth in writing how you have things hooked up & setup in the menu vs hands-on seeing
what you've done. can you get some help from your dealer or is this an internet or Worst Buy purchase?
the same is true of your surround speakers. I find it very hard to believe your receiver is at fault not being able to get surround sound; counting a low cost consumer model I bought in the 80's, I've owned 6 Pioneer receivers, including 3 flagship Elites, and not one failed to properly send signals to all the channels they were setup to do.
the Pandora problem is something I can't address because 1) I did the update but don't use Pandora account 2) too many unknowns as to your home network, router used & its setup, etc. My router was a top of the line $200 Netgear I got 5+ yrs ago and it's wireless connectivity to my wife's ipod, my iphone and the SC-68 receiver gets flaky at times, with dropouts. So should I blame Pioneer for that? of course, not.
I'd like to see you get your receiver to work for you but I don't know how I can help. can you send screenshots of your HDMI setup menu and photos of your connections? have you checked your samsung manual?
as far as error messages...Bose speakers. You have a nice receiver & deserve to use better speakers than Bose even as surrounds
Bose is such a proprietary company with special cables, connections, bass modules, who knows why you can't get them to work
have you tried troubleshooting 101 - connect your fronts to the surrounds just to see if you get sound then? that would confirm if it's a receiver setup issue, wiring problem or that Bose speakers just aren't going to work because of some unique connectivity thing, like the satellites may need to be connected to their bass module 1st, then the bass module to the receiver. I can't tell you because I don't use Bose speakers...if your Bose are the older "normal" speakers they used to make, like the direct/reflecting 501/301/901 models - normal speakers with normal connections, then it should work. BUT and this is VERY IMPORTANT, if the Bose speakers ARE the bipolar reflecting type, and they are wall mounted then its not surprising you got a Polarity error message due to the reflected sound interfering with the direct measurement. I have dipolar planars and have never had a polarity error message...but I also have mine set 5 ft from the front wall so the back wave isn't throwing the measurement for a loop. If you are certain your wiring is correct, then ignore the polarity error, hit OK and move on. ALL room correction systems can be tripped up on polarity measurement and the speaker design & room acoustics play a big part. And all companies say the same thing, ignore the error if the speakers are wired correctly. Also, some speakers may have reversed phase designed into the crossovers for a particular sonic signature.
too many unknowns. the fact that you basically can't get almost anything to work tells me the problem is either a defective receiver (unlikely but you can return & replace) or you
sorry to be blunt but 1 or 2 problems or quirky issues I can understand having to work thru but all of the ones you are having? with no TV, no surround sound & now network problems? the chances of this all being the receiver are not high...just saying
HDMI - go back to basics. Turn OFF HDMI Control in the HDMI setup menu. Turn OFF ARC (audio return channel) and then see if you get video to your Samsung. if you have dual HDMI outputs, make sure you have selected the HDMI output in the menu to match the connection to the TV - if TV is connected to HDMI Out 1, set the receiver to output to HDMI 1 or to both (I think there's a choice for both, but consult your manual). if you are trying to get receiver sound to your TV speakers, then you have to have HDMI ARC turned on in the menu. and even then, if your Samsung doesn't support ARC, you won't get sound to its speakers from the receiver...HDMI does NOT work that way. It depends on what version of HDMI your TV has. If it's HDMI 1.3 / 1.3b then no sound to the TV. If it's HDMI 1.4, then it probably does have the ARC feature but you
will need to confirm that with the Samsung manual & product info. If all else fails, then it's possible the Samsung may not make the handshake with the receiver, but it's too premature to conclude that.
I understand your frustration. if you want to pursue having forum members help, post some shots of your settings or confirm EXACTLY what you did in each setup menu. and post if you you heard test tones from your surrounds running auto MCACC? are they set to NO, SMALL or LARGE? did you set the bass crossover and if yes, what is it?
and the bottom line is you can decide to return it & try another brand or ask your dealer for in-home help. it may cost you some money but that's better than beating your head against the wall & not getting anywhere, which is where you're at
I've been at this hobby for 40 years and have never had the setup problems you seem to be experiencing...everything I have tried on the SC-09 & SC-68 works. Maybe I misinterpreted a feature along the way but I always got video/audio and both do connect to my network.