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Any way back to iOS 8.4.1 from 9.3.2?
I finally made the jump to iOS 9 and I'm sad to say I regret this decision.
The main issue for me is that Studiomux performance has suffered quite a lot on my device (iPad Air 1, Windows 7 x64).
I now get audio dropouts frequently with relatively simple setups running the 128 buffersize and even occasionally with 256 buffer. (for example, single channel of Gadget or Animoog)
This wasn't happening running iOS 8.4.1 on my setup. 
I do have an itunes backup from 8.4.1, but I assume I'm now stuck on iOS 9.
Is this correct or does anyone have any ideas for other options?
Cheers.
edit: seems worse than I thought, crackles and pops even with the largest buffer in Studiomux. welp. Contacted their support to see if there is any solutions too.
Comments
Hm, in itunes reset device to factory condition and then restore from backup?
I'd like to know if this is possible
Its was worse for me on 8.4.1
This would be ideal, but I thought since Apple stopped signing iOS 8.4.1 that it wouldn't be possible. Can anyone confirm this?
Interesting, although I assume you might be running Air 2 or higher device? (or perhaps connecting via a Mac?)
Hm, then i would like to know about that too! As i'm on iOS7 (for different reason; i know i m missing out apps like Patterning) and wanted to erase/restore it to get rid of "OTHER" files that eat 5 gb of my 16 gb ipad 3.
The only way to go back.
Only jb? damn. I forgot it like scary nightmare.
I don't think that is a nightmare because after the jailbreak with the next step you reset you device.
Jailbreak gone.
Please check the video.
Objectively audiowise, 9.3.X is known to be better than any earlier 9 release and any 8 release. There were audio bugs in those prior releases that were actually quite serious (and definitely made them worse in general terms than 7.1.2). The studiomux issue may be specific to studiomux and if you approach the devs as you have, perhaps they can help you with that, but going back to anything (even it were possible) prior to 9.3 is a step down for audio throughput generally speaking. The studiomux issue should be resolvable under 9.3.2 I would hope and imagine. As you have already said you've done, see what the devs. say and if you get any help there.
@MusicInclusive Thanks for the input. I personally don't want to go down the jailbreak path so I'm hopeful this can be resolved somehow. If I discover anything in the meantime I will update the thread with my findings.
Airplane mode didn't help, not sure if there are any other settings in the new iOS that could effect audio performance or specifically Studiomux. I hope the devs can offer some ideas.
For those who don't already know, jail breaking iOS devices is a violation of the Apple user agreement which if you're okay with that it's your decision, but I'm more concerned about posting it on a site hosted by an iOS app developer who may be adversely effected by your decision to post this information.
Havent Apple openly accepted legality of it several years ago? Though side effects yeah i guess what you mean.
jailbreak != software piracy (unless you are a dick)
Yes, the judge ruled the devices belong to the people that bought them, and they can install whatever software they please.
https://wired.com/2010/07/feds-ok-iphone-jailbreaking/
Jailbreak for me =
Support for Split-Screen Multitasking on my unsupported Air 1 (buggy for iphone apps on ipads)
Kill all background apps by pressing a button
Custom Screen color temperature
Full Media Player and (legal) torrents
Download Manager
Adblock
Low battery mode if needed
WiFi hotspot (no need for router for wifi osc/midi with other devices)
Rapid graphics (disabling animations aka ios 9 AssistiveTouch glitch)
Working iFunbox with file access (folders/subfolders) support and NO itunes)
Clear junk files (although I don't need it yet)
App Store is working fine for buying/updating apps.
Currently only 9.1 version is supported but decided to stay since I didn't experience any usb audio and background audio crackles .
I see. Just it's a thing that is not attractive to bother with. I may sound outdated, but i never felt like people who expect personal computer funtional from smartphones/tablets. I mean all those people who say thay you must root device, you need an access to every file etc. Though, sadly, some itunes/ios/apple thing really leave the only way, yeah? Is there a confirmation that 100% says that you cant restore to system of your backup from itunes if you do factory reset?
Who ask?
I only give an answer. If you don't like it give them a hint to delete. I will not do it.
Where i come from open decision are welcome.
@Waldemar I'm just concerned about the Audiobus developers like @Sebastian possibly being negatively effected by what's posted on the forum but ultimately it's up to the forum owners and posters to decide what they want to do. Like you, I'm just expressing my perspective.
If what @Processaurus posted is the latest legal decision and still holds, then perhaps the Audiobus team could care less unless they're concerned about users expecting the same level of support on both jail broken and factory iOS devices.
I don't know if your comments are specifically directed to this particular situation in the thread, but on older devices like an iPad 2, the latest version of iOS is definitely very slow relative to the previous iOS and lacks many of the most desirable features of iOS 9 so I can see where people would want the ability to roll back. Hopefully the Studiomux developer can resolve the OP's issue.
I've already commented at length on the various choices between versions of iOS elsewhere. In summary, if you are on 64-bit devices iOS 9.3.X is better than anything from 8 or earlier 9. If you are on a 32-bit device, have 7.1.2 AND older ipas, including older Audiobus, then 7.1.2 is better. However, if you have already updated from 7.1.2 on an iPad 2 to 8 or earlier 9, 9.3 is still better in that case too.
The ruling was modified in Oct 2012, when it became illegal to JB an iPad but legal to continue to JB an iPhone.
http://arstechnica.com/tech-policy/2012/10/jailbreaking-now-legal-under-dmca-for-smartphones-but-not-tablets/
Go figure. Arbitrary law. In Oct 2015, that ruling lapsed, meaning it is now legal again to JB an iPad as well as an iPhone.
http://www.theverge.com/2015/10/27/9622066/jailbreak-unlocked-tablet-smart-tvs-dmca-exemption-library-of-congress
However, it is still against the Apple TOS (which is not a legally binding document in the same way the law is), and Apple could (although I do not know they ever would), take action such as suspending someone's ability to use the app store, remove their iTunes acct, etc. etc. I haven't heard of that happening though.
FWIW. I felt a lot like yourself when I accidentally upgraded to 9.x from 8.x on my main iPad air 1. I was primarily concerned about performance loss because I was not on the newest iPad. After being on 9.x for almost 4 months... I don't think I have suffered any performance loss and the music apps seem very stable... Even more stable than before. I think you should be fine on 9.x
I think you might want to investigate disabling or removing some apps that might be interfering with performance if you iPad or the application you are using.
I disabled all network traffic apps and notifications and alerts. Mine acts as just a music studio and occasional web browser
@MusicInclusive thanks for the info.
I doubt Apple will ever reverse their update policy to allow people to go to earlier iOS versions. Fewer versions of iOS to support is a key strategy for maintaining a consistent user experience. I think it'd be a much more difficult job for developers to offer support with more versions of iOS offered on more devices. Apple can get away with offering fewer iOS version choices as people have come to expect this from Apple.
Developers often have a more personal relationship with app users and would feel the pressure to at least try to offer support on more iOS versions and charge more to cover the increased support for updates and development in a multi iOS version environment. They could conclude they can't meet user expectations at a price point acceptable to users and could stop developing for iOS.
The many OS and hardware versions for Android contributes to why music app development on Android lags behind iOS despite having a larger user base.
There'd likely be increased compatability issues for apps used in multi app workflows thereby compounding support/update tasks and degrading the user experience which Apple seeks to preserve. They attempt to strike a balance between pushing forth new devices with improvements in the user experience due to new hardware and iOS features against maintaining compatibility with existing apps and devices. Apple sets limits as to which devices each major iOS release will include hoping users feel excited about new developments rather than buyer's remorse due to feeling left behind by newer devices.
Just for the info: there is no way to do what the TS wants even with a jailbroken iDevice.
@InfoCheck i delete my above comment.
The question for sure was useless.
Thanks for confirming that. Hopefully there is some way to fix the issue on the horizon. Pretty gutted to have lost the use of Studiomux for the time being, although the MIDI side still seems to work really well at least.