Pioneer AVH-P1400DVD Compatibility Issue with iPhone 5

Question

I have a Pioneer AVH-P1400DVD double-din receiver in my truck, that I've had for 2+ years now and shortly after I purchased it, T-Mobile finally started selling iPhones on their network, so I bought an iPhone 5. Well as many know, they're said to be compatible, and I can say, for at least a year and a half I never had any compatibility issues until recently.
After the iPhone 6 & 6 plus, as well as the iOS 8 launching, about 2 months later I realized that the constant unnecessary updates started taking away the compatibility between my head unit in my truck and my iPhone 5. Also, before the updates, I had no problem using a 3rd party 8-pin lightening charger/sync cable in my truck, which was much more durable than the lightening cable that Apple overcharges for, because it was double in thickness. Although the 3rd party cable I was using cost as much as the Apple 2ml cable, it wasn't too long and wasn't nearly as flimsy as the Apple 1ml.
I've researched a solution to my problem and haven't come up with anything, so my question is:
Does anybody know what the **** to do about the compatibility issues we're having? I, as well as many others, have spent entirely too much money for something that is said to work, something that did work, but now does work efficiently. For as expensive as these **** phones are and as expensive as the head units or any other electronic that is "compatible", there should be no reason for any change to the products after the initial purchase in regards to features of any sort.
WHAT IS THE FIX????????

Answer 1

Please read this :
https://discussions.apple.com/message/20053332?ac_cid=tw123456#20053332
Well I copyed it to you here.
Re: Anyone still having IOS 6 wifi issues?
created by mpa9366 in Using iPad - View the full discussion
Having done a lot of reading today and having found a very good online tablet magazine (will post link tomorrow) there seems to be a few tech bods onto the problem.
The magazine I was reading identified wifi problems within hours of the ios 6 release and have been analysing since then with almost daily updates - the story seems to be:
The apple authenthication transmission is normal, it should slip through event prior to a full handshake with the host network being completed - however if not authenthicated then apple will not permit the device to connect (kills the connection) this is designed to protect apple from counterfeiting. So thats problem 1 if you dont receive a token from apple.
Problem 2 is that ios 6 only supports ipv6 (the new ip protocol) whereas outside silicon valley a large proportion of routers modems etc are still ipv4 protocol.
So youre locked into ipv6 in a world where ipv4 devices are everywhere and apple have not allowed for the ability to handle both protocols. This is like GM telling you your car requires an upgrade, everything will improve etc and as part of the upgrade fits a fuel cell motor and stays silent when their upgraded vehicles are simply parked up because they cannot get fuel.
A very basic expectation would have been dual protocol handling - we know the HW supports ipv4 as all wad fine on ios5.
So its going to be hit and miss with networks - more hit than miss in techy areas like silicon valley, but more miss in places like where I am - a small town in rural Switzerland.
Only apple can fix this with a patch to enable ipv4 protocol handling.
There you go. you just need to buy a new router, I'm sure Apple has one for sale, cause it's not there fault for sure.
Wonder why people start to migrate to other devices ?