It's already a little to late for me as I got the update. Some might want to hold off before updating their iPhone to iOS 5 until Pioneer comes out with a fix for this either way here is the information from Pioneer.

"Dear Pioneer Customers,

Certain models of our In-Dash Navigation AV Receivers that support playback and control of the Pandora™ internet radio and Aha Radio iPhone® applications are currently experiencing audio playback issues with these services. The issue occurs after installation of iOS 5 onto the user's iPhone®.

We are currently identifying the root source of this issue and working diligently to engineer a solution. We will post updates regarding this situation on our website, pioneerelectronics.com. Please check back for the latest information.

The following models are affected: AVIC-Z130BT, AVIC-Z120BT*, AVIC-Z110BT**, AVIC-X930BT, AVIC-X920BT*.

No other Pioneer In-Dash DVD Receivers or CD Receivers that support playback and control of the Pandora Radio iPhone application are affected by this issue.

Seems to be an issue with pause/play. They start out on pause and don't work when hitting play - most of the time. I did get Pandora to work when hitting the pause/play multiple times, but it wasn't consistent. With the speed at which Pioneer works, I'm not holding my breath.

Without Pandora, I would not have purchased this unit.

I have an iPhone 3GS with the upgrade as well. What I do when I get the "pause" bug is temporarily swap over to the iPod source, wait two seconds, then swap back to Pandora and it starts working again. Pain in the butt when you get a phone call though, because you have to do the source swapping again.

Part of the issue may be where in iOS5 they decided to split the Music and Video sections from being in the iPod app into their own seperate apps since some of the selections work based off of that hierarchy.

By swap to the iPod source, do you mean use the app source button on the HU?

so is the problem when you using music stored on your phone from the ipod part of the phone

or is the problem with only when yousing to listen to music on pandora ?

so is the problem when you using music stored on your phone from the ipod part of the phone

or is the problem with only when yousing to listen to music on pandora ?

I only have the pause problem when using Pandora.

I do not have the recent map upgrade installed, just the z120bt

hmm ok cool i don't use pandora i just don't want to have it pasuing when im using the ipod so im kind of not sure about updating untill others reaspond on this also

Z120BT, no updates, and have the Pandora pause problem. I only came into comment because I saw someone received a response from Pioneer that they are "working on it". That's very surprising to me. I assumed they would ignore the issue and expect us to buy a new head unit.

I was holding out on buying the upgrade for the Z120 that adds aha and facebook etc until after iOS 5 was released. This is exaclty why I was waiting.

does this issue occur when streaming over bluetooth? I haven't updated to iOS 5.0 because there isnt a stable jailbreak yet, but i will be once the jailbreak is stable. I dont leave my iphone connected through the ipod cable. I usually stream via bluetooth.

I have the 130BT (version 3.00) and the new 4S phone.

When you start Pandora, it plays for a millisecond then pauses. When you unpause it, it plays for another split second then pauses again. I did find that if you switch to the ipod source, pandora will play fine but you wont get any album art on the screen, it just spins. (cant find it)

Other things: I haven't been able to get any BT streaming to work on the new iOS/phone (but I haven't played with it much, it might be user error thus far)

Also, there have been 3 times where im playing music directly from my phone and it just pauses randomly. I unpause it and then its fine.

Weird bugs, I hope they address this ASAP.

Ya if you keep poking the pause/play spot it will finally go. But it's a pain for sure. One wonders how this kind of bug happens with an OS change.

By swap to the iPod source, do you mean use the app source button on the HU?

Correct. Just to clarify, I have a Z120BT with the latest firmware. I'm also using the iPod cable and not streaming via bluetooth.

I can confirm, that once pandora is started and wont unpause, if you hit the ipod source, wait 2 seconds, then go back to pandora everything will function normally.

Last two times the following worked for me. I fired up Pandora on my iPhone 4 and connected it before starting the car. You'll need to pause Pandora on the phone as it will start to play to the phones speaker. Then when I started the car and the 130 booted I just tapped Pandora on the 130 and it switched over and began playing. A little cumbersome but it is something until it's fixed.

I can't get bluetooth streaming to work right after the update. I did get it to play once but the sound was way too low. It's not a huge deal because I have a dock but I hope Pioneer checks into all this soon. 1000+ unit, I hope they support it.

Any update to this? Is soo annoying ! I'm about to remove mine and replace it with an iPad.... Does a zillion times more, and doesn't have issues that take the manufacture eons to fix things.

i still have not updated to ISO5 im waiting untill there is a confirmed fix for it

i think there are alot of things wrong with ISO5 and e all wanted it to be rushed out fast cause we all heard good things about it but point blank they rushed it out to fast i think because they wanted to put something out in Steve Job's memory and wanted ISO5 to be the latest legacy for him well it did not work it back fired i heard with in the first 4 days there was already a recal on the 4s or ISO5 that sucks

so im still usuing my old one i did update my dads 3gs to ISO5 i think i may just test his phone out in my car to see what happens and all

but im not switching not yet

i think that the only thing that will fix this is for Pioneer to do a Firmware updated

because you got to think about it if its having the problems with all the units no matter what firmware if you ahve 3.000 or 3.001 then its got to be a firmware compatability issue between the pioneer firmware and the ISO5

they did the 3.001 update to fix the VR on the Z series and aha radio issues on the X seeries from what i understand so i don't see why they won't adress the ISO5 problem with a firmware fix just takes time

Stupid question, I didn't read the other responses to see if someone tried this - but has anyone tried Pandoralink? The actual APP for Pioneer? I am too lazy to try it now, I guess ill try tomorrow.

Pandoralink is outdated and is no longer needed, but just for grins I tried it and it didn't do anything for me.

I came across this link of a web site that claims to allow you to download and install older versions of iPod/iTouch/iPhone/iPad firmware - and instructions on how to upgrade and downgrade your OS. This might help some of you who now regret the Apple iOS 5.0 upgrade. http://www.felixbruns.de/iPod/firmware/#

Disclaimer: I have not tried this process, so I can't help with questions or vouch for this. Just thought it might be useful for some here.

Pandora has updated the app for iOS 5 and it seems to be working now in my Z130, Now its AHA Radio's turn.

Pandora released an update in 11/2 which fixed their end o the problem. U can now switch back and forth btwn pandora & other apps & pandora will pick up where it left off w/out asking you to start the app from your phone or the pause/play issue. However pioneer & aha have yet to release an update to resolve the iPod & aha radio issues respectively. So for now (after updating pandora on ur phone) if you switch off your iPod to pandora, when you go back to iPod you have to select a song/playlist again or else pandora will continue to play.

Is anyone else still having an issue with this? The only way I can get Pandora to play is by launching it and putting the unit on iPod mode. Yes, it plays and I can get cover art, but you lose the thumbs up/down options and the ability to change Pandora stations. It is also rediculous that I have to select a song or use VR just to get the iPod playing again when I'm already in iPod mode. Is it too much to ask for to listen to Pandora when using the Pandora mode and iPod in iPod mode??? I also don't see anywhere to get support directly from Pioneer and they've already declared the issue as resolved.

Can anyone tell me if this is a problem for anyone else or is it just me? Perhaps I need to do things in a specific order for this to work? I've tried multiple ways with the same results.

3GS running ios5 on Z120BT.

How can we get any word directly from Pioneer? I've sent their support two requests that have gone unanswered.

Do you have a Z120 that's been upgraded to a Z130, or are you still using the old maps/firmware? Worst comes to worst, try uninstalling Pandora and reinstalling from scratch. I've had to do that on a few of my apps where functionality disappeared after an update. Pandora seems to be working great for me now that they updated the app.