1 24 25 26 27 28 Previous Next 1,014 Replies Latest reply: Mar 16, 2014 4:35 AM by Sedici Go to original post Branched to a new discussion.
  • 375. Re: bluetooth music issues after iOS6 update
    crankerchick Level 1 Level 1 (5 points)

    Missing the point. AVRCP is a protocol with requirements, one of which is backward compatibility. When a provider moves to the next iteration of the standard, they must maintain backward compatibility. That means it is apple's fault, not Mazda. Why is that so hard to understand? Mazda can certainly update there firmware to work on 1.4, but they would be soon that out of the goodness of their hearts for their customers, not because it is their fault.

  • 376. Re: bluetooth music issues after iOS6 update
    William Kucharski Level 6 Level 6 (14,705 points)

    crankerchick wrote:

     

    Missing the point. AVRCP is a protocol with requirements, one of which is backward compatibility.

     

    You're missing the point; backwards compatibility is a two-way street and both Apple and the implementor of th head end need to support it.

     

    In particular, Mazda couldn't deal with a version of the protocol any greater than 1.2, and it was their implementation failure that caused the problem, not Apple.

     

    For example, a line of code checking for a version of AVRCP >= 1.2 is future-proof; one that say checks if the version is 1.2 and ignores the data if it is not, is not.

  • 377. Re: bluetooth music issues after iOS6 update
    crankerchick Level 1 Level 1 (5 points)

    Now that makes sense.

  • 378. Re: bluetooth music issues after iOS6 update
    crankerchick Level 1 Level 1 (5 points)

    Although I am not sure I would call that backward compatibility, but forward.

  • 379. Re: bluetooth music issues after iOS6 update
    rustykerr123 Level 1 Level 1 (15 points)

    The way it actually is suppose to work is this:

     

    The receiving device device (Head unit), let say it is running version 1.2, should run 1.2 and older, not anything newer, they can predict the future or else we would just have version 1 and there would be noting else to change.  Now the communicating device (iPhone), with iOS 6 it is running 1.4, it should handle version 1.4 and older.  So with this, this phone and head unit connected would be connecting using version 1.2, it is the newest common version supported between the 2 devices.

  • 380. Re: bluetooth music issues after iOS6 update
    crankerchick Level 1 Level 1 (5 points)

    Some people are determined to make a way for this not to be Apple's problem to fix. I'm not one of them. They broke backward compatibility plain and simple.

  • 381. Re: bluetooth music issues after iOS6 update
    William Kucharski Level 6 Level 6 (14,705 points)

    If you're compelled to blame Apple that's fine, but I gave you a concrete example of a recent time where compatibility was broken by Mazda, plain and simple.

     

    This is what Apple had to say in that case:

     

    We discussed this issue with the manufacturer. They acknowledged there is a critical bug on their platform, as they require the phone to support no more than AVRCP 1.3. Because iOS supports AVRCP 1.4 since 5.0, they do not enable & use any AVRCP 1.3 feature. The bug has been fixed on their newer platforms.

  • 382. Re: bluetooth music issues after iOS6 update
    mowog74 Level 1 Level 1 (0 points)

    You're missing the point; backwards compatibility is a two-way street and both Apple and the implementor of th head end need to support it.

    I think I get what you're saying here but you're saying it in a way that makes me feel like I need to wash my brain out after reading it.  Backward compatibility is not a two-way street, that's ludicrous.  The best the older device can do is comply with the standard at the time.  In this case, later versions of the protocol have been designed to ensure backward compatibility as long as the newer device is fully compliant with the newer standard, and the older device was fully compliant with the older version.  Which leads us back to square one: if the new iOS is not fully compatible with many older bluetooth devices, one or both of them is not fully in compliance with their claimed version of the standard.

     

    At this point none of us knows for sure (and frankly I for one don't really care that much) whether Apple or the accessory manufacturers are the ones not in compliance.  What I've been maintaining all along is simply that it was irresponsible and customer-hostile of Apple to release this update without more thoroughly testing it with a wider range of accessories.  Even if Apple's code complies perfectly with the standard and the fault lies totally with accessory manufacturers, in customers' eyes this update has caused something to stop working that used to work.  No one who doesn't work for one of these companies cares one lick about whose fault it is.

  • 383. Re: bluetooth music issues after iOS6 update
    rustykerr123 Level 1 Level 1 (15 points)

    Yes that might be the case with Mazda, but that does not make sense for the rest of the brands having issues.  All of these cases of the Bluetooth issues all have 1 thing in common, it worked fine, then after updating to iOS 6, it did not work.  Then it should be obvious that there was a change in the update causing this issue.  If the stereo manufactures knew there might be an issue affecting Bluetooth, don't you think they would have tested it under the beta an have a fix, or at least an announcement of this issue shortly after iOS release.  There might be issues with all the protocols used by the manufactures, but if apple wanted to discontinue that being used, they should have announced that.

  • 384. Re: bluetooth music issues after iOS6 update
    mowog74 Level 1 Level 1 (0 points)

    One other thing: does anyone know why this overhaul of the bluetooth stack was so imperative?  Slightly better battery life?  The only thing I've seen touted as a new feature that's remotely bluetooth-related has been moving the bluetooth on/off switch to the top-level settings page.

     

    I could better sympathize with a rush to get this breaking code into production if it was enabling some big tangible benefit or new feature, but if it is I sure haven't heard about it.

  • 385. Re: bluetooth music issues after iOS6 update
    William Kucharski Level 6 Level 6 (14,705 points)

    You would think audio vendors would have tested with it, but they clearly didn't

  • 386. Re: bluetooth music issues after iOS6 update
    mkrochmalnek Level 1 Level 1 (0 points)

    So good news to anyone else who has a Pioneer head unit. Pioneer has completed their compatibility testing of most of all of their newer head units using iOS 6 running on iPhone 4/4S and 5. So it looks like there is a clear AVRCP issue with a number of their head units (including mine unfortunately) for all iPhone models and it looks like Pioneer is planning to release a firmware update to address the issue, although an ETA has not yet been announced. Maybe this actually is an issue with the software on the other devices and not iOS 6. Either way Apple needs to be working more closely with device manufacturers to ensure compatibiliy with features prior to public release.

     

    http://www.pioneerelectronics.com/PUSA/Apple+Compatibility

  • 387. Re: bluetooth music issues after iOS6 update
    mowog74 Level 1 Level 1 (0 points)

    William Kucharski wrote:

     

    You would think audio vendors would have tested with it, but they clearly didn't

    You keep saying that, but you have no way of knowing anything about what testing they did or didn't do. All you know is that they haven't released any updated firmware. Maybe they have an update coded but are subjecting it to a thorough suite of testing before releasing it, as any professional, customer-friendly company would do?

  • 388. Re: bluetooth music issues after iOS6 update
    William Kucharski Level 6 Level 6 (14,705 points)

    True - I don't know.

     

    However there were reports of this behavior from some developers well in advance of the general release; Apple didn't suddenly change something at the last minute that caused this.

     

    It's clearly a complex issue, though.

  • 389. Re: bluetooth music issues after iOS6 update
    drewe2000 Level 1 Level 1 (0 points)

    As an aside, there are several important improvements in Bluetooth 4.0, including "Bluetooth Low Energy." This is essentially the ability to run devices (sensors, for example) all of the time, with a coin battery, that can last for months to years. Think medical devices, as well as other "less important" items. It's advertised sometimes as "Bluetooth Smart," and you'll be seeing more and more of it.

     

    I don't know this, but the power efficiency has probably improved somewhat in general for Bluetooth, including connecting to your car.

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