Removing that volume limit, iPhone 5

[stewlewis]

IOS 8.1.2
I have a UK Iphone 5
It has the \settings\music\volume limit\EU volume limit toggle.

As others have said it's quiet, especially with high ohm non apple headphones.

I used TaiG to jailbreak.
I use Ifunbox to copy files to and from PC
I use plist editor pro under Windows to edit the files.

I have a SPL/RTA audio prog on the laptop and a jack lead from iphone headphone to laptop.

Freashly restored IOS 8.1.2:
Playing white noise mp3 EU volume limit ON and calibrate the RTA software to 85db.

original:
//system/library/frameworks/mediatoolbox/framework

/N42/EUVolumeLimits.plist
<key>HighVolumeLimit</key>
<real>0.0</real>
<key>LowVolumeLimit</key>
<real>0.63</real>

/N42/RegionalVolumeLimits.plist
<key>HighVolumeLimit</key>
<real>0.90000000000000002</real>

//system/library/frameworks/mediatoolbox/framework

/default/EUVolumeLimits.plist
<key>HighVolumeLimit</key>
<real>0.83999999999999997</real>
<key>LowVolumeLimit</key>
<real>0.59999999999999998</real>

/default/RegionalVolumeLimits.plist
<key>HighVolumeLimit</key>
<real>0.83999999999999997</real>

Full volume RTA=96db
EU volume limit on RTA=85db

editing:
//system/library/frameworks/mediatoolbox/framework

/N42/EUVolumeLimits.plist
<key>HighVolumeLimit</key>
<real>0.90000000000000002</real>
<key>LowVolumeLimit</key>
<real>0.63</real>

/N42/RegionalVolumeLimits.plist
<key>HighVolumeLimit</key>
<real>0.90000000000000002</real>

//system/library/frameworks/mediatoolbox/framework

/default/EUVolumeLimits.plist
<key>HighVolumeLimit</key>
<real>0.90000000000000002</real>
<key>LowVolumeLimit</key>
<real>0.63</real>

/default/RegionalVolumeLimits.plist
<key>HighVolumeLimit</key>
<real>0.90000000000000002</real>

Full volume RTA=97.5db
EU volume limit on RTA=85db
(same files in both locations, default and N42)

deleting:
Both files in /default
Full volume RTA=97.5db
EU volume limit on RTA=85db


Changing:
Values to 1, in all or either files in both or either locations:
Full volume RTA=97.5db


Deleting and restoring:
restore original files to /default
delete both files from /N42
Full volume RTA=99db !
BUT, switching EU Volume Limit toggle crashes/restarts IOS
Stopping and starting a track causes volume to go to zero, manually turn back up.
Turn volume of to full gives high volume warning and orange bar, has to be turned up again.

I did not install Openssh or change any file permissions during this, it didn't seem to matter.

Anyone know how to get:
Full Volume to 99db and the EU Toggle switch still work?
That seems to be the max from the phone, unless anyone knows different?
Which if any of these files are in place on a US/Non EU phone?
If they are in place on US phone, contents?
I have read to restore via VPN from itunes with a US IP, does this work? Does it have any regional impact on cellular etc?

*the db values are examples, just a reference on laptop.

Searches bring up lots, yet not much info on the limit removal.
A lot of old stuff too, the internet's getting full of old crap.
Archive is good, old crap is misleading.

Update:

I followed these instruction from another forum:

http://www.head-fi.org/t/682937/iphone-5c-and-5s-audio-output/300#post_10413365

The Full volume limit is now RTA=99db
With the EU volume limit toggle on the RTA=73db

Cool, I thought, maybe the EUVolumeLimit.plst number is a percentage of the slider and the top of the slider is now 1.2 as opposed to 1. When toggling the EU Limit the volume slider does indeed jump to about halfway rather then 3/4.

But, exiting settings and music apps and running them again the limits reverted to as I had them set in the previous post.

Full=97.5db
EU=85db

 

[Applejuiced]

Wow the European Union has a cellphone volume limit.
Nonsense...

 

[stewlewis]

Yep all portable music players supplied with headphones.
85db by passable with warning, 100db full volume.

Trouble is that's measured out of supplied earphones, aftermarket earphones with different impedances would output different volumes.

I think non EU phones and players, iPhone, would give 120db out of the apple buds.

But, apple can't be blamed for providing a player and earphones that could deafen you cus the EU told them about it..........

Don't supply the phones, iPad, don't need to comply and limit the device.

I may be wrong on those dB numbers and my tests for sure as I didn't calibrate properly.

----------

I've now tried using the Filza app and editing the files on the phone, changing permissions too.

No change to results.

 

[stewlewis]

Being discussed in the more active, in the wrong place, thread:

https://forums.macrumors.com/threads/1727895/

 

[cymolia]

download the mikoto tweak, there's an option in there to remove it