Permanently disable AVLS with homebrew?

Discussion in 'PS Vita - Hacking & Homebrew' started by Razor83, Sep 2, 2016.

  1. Razor83
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    Razor83 GBAtemp Regular

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    I'm looking for a way to disable the AVLS feature present on some models of European PS Vita's.

    For those who dont know AVLS (Automatic Volume Limiter System) is a setting which limits the maximum volume level:-
    http://manuals.playstation.net/document/gb/psvita/settings/avls.html
    When you attempt to turn up the volume it will stop at 21 'clicks' out of 30, and 'AVLS' flashes on the screen:-
    [​IMG]

    Apparently this was implimented in European PS Vita's due to European regulations?:-
    http://community.eu.playstation.com/t5/PS-Vita-Support/AVLS-Problem/td-p/17817920
    http://www.gamefaqs.com/boards/620272-playstation-vita/69573738

    Early 1000 model European PS Vita consoles have AVLS, but this can be permanently disabled by unchecking a tick box in the "Sound & Display" settings:-
    [​IMG]

    Later 1000 models and all 2000 'slim' model European PS Vita's have the same AVLS setting, but unchecking it only disables AVLS temporarily - either for 20 hours or until you turn the system off and on again. In particular this last bit is really annoying, as it means everytime you restart your PS Vita you have to go into the settings to disable AVLS again before you can turn the volume up fully. Here is a picture of the message which pops-up everytime you untick the AVLS setting on a 2000 slim model:-
    [​IMG]
    Note that this pop-up message does not appear at all on early 1000 models.

    I believe this change occured when Sony switched the audio DAC chip used in the PS Vita:-
    Early 1000 models = Wolfson Microelectronics WM1803E
    Later 1000/All 2000 models = Wolfson Microelectronics WM1804E
    [​IMG]
    Presumably the new audio chip is capable of louder volumes, so the AVLS setting for Europe had to be adjusted?

    TLDR: I want to permanently disable AVLS on all European PS Vita models using something like VitaToolbox.
     
    Last edited by Razor83, Sep 4, 2016
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  2. Langin

    Langin GBAtemp's kpop addict

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  3. fixx1983

    fixx1983 Advanced Member

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    Maybe you can try with registry editor in CONFIG\SOUND

    [​IMG]
     
    Last edited by fixx1983, Sep 2, 2016
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  4. aos10

    aos10 how i fotochop?

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    Yes,i am very annoyed by AVLS,hope someone make a way to remove it.
    Why the US/JP Vita don't have it?
    Maybe there a way to inject the US file system to EU file system?
     
  5. Razor83
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    Razor83 GBAtemp Regular

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    I'm surprised your thread didnt appear in any of my recent google searches! I probably wouldn't have made my own thread if I had seen such a recent post :unsure:

    ...Although hopefully the more exposure we can get about this issue, the greater the chance that someone will find a solution :)

    Thanks for the suggestion, I just tried this and unfortunately it didnt work :(

    On my European 2000 model it shows "avls:1", but changing it to "avls:0" does not appear to disable AVLS. It does appear to uncheck the AVLS tick box in the settings menu, but it doesnt actually disable the AVLS volume limit!? Also upon rebooting the setting changes back to "avls:1".

    I also messed with "avls_timer" changing it between 1 and 0, but that didnt appear to make any difference either.
     
    Last edited by Razor83, Sep 4, 2016
  6. leonmagnus99

    leonmagnus99 GBAtemp Addict

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    im having the same issue ! i did not know about this, though i rarely put the volume to the max, its usually set to 50-70% for me .

    but it would be awesome to get rid of this stupid restriction through hax :l

    hopefully we will be rid of it eventually.
     
  7. Dvdxploitr

    Dvdxploitr GBAtemp Fan

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    hmm....if i were to bump that "Master_volume" beyond 20...could the Vita get LOUDER and its just restricted by the system itself rather than the speakers? I am hearing impaired (about 40% hearing) and wanting the system louder
     
  8. doctorgoat

    doctorgoat GBAtemp Advanced Fan

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    changing the timer to 1 sets it to 1 second

    i told someone to set theirs to an obnoxiously large number to see if it helped, but it wasn't a permanent fix so they got mad!
     
  9. Razor83
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    Razor83 GBAtemp Regular

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    Just bumping this thread as due to all the recent PS Vita homebrew developments (and with Henkaku Enso fast approaching) I thought maybe someone could make a homebrew app capable of permanently disabling AVLS on European PS Vita's?
     
    Last edited by Razor83, May 23, 2017
  10. slifer1231

    slifer1231 Advanced Member

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    As far as I know sony seems to use the same system software worldwide on retail versions at-least, there is only flags and reg settings that set the region and other settings im not sure where it is. But if you could find a way to change some settings to make your vita think it is a US version you may be able to disable that setting permanently as I believe since it has the eu flags/settings the avls turns back on even if you edit the registry. Another thing that may work I'm not sure i never tried it but if i remember correctly on the ps3 if you converted your ps3 to a Debug system you could change the region via Debug menu and it would stay maybe that could be done with the vita dex files that where released not to long ago then after you change the region use the firmware re-installer app released by the same person who released the dex files to re flash back to stock 3.60 and maybe it will keep the region change
     
    Last edited by slifer1231, May 23, 2017
  11. SuperDan

    SuperDan Im Aware ... Im Unaware

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    oh im glad i own a oled phat even more now i have never had a issue AVLS ... hope you figure this out
     
  12. memomo

    memomo ( ͡° ͜ʖ ͡°)

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    I hope we can see one day a plugin to disable it forever..

    Sent from my SM-G950F using Tapatalk
     
  13. Tom Bombadildo

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  14. Abu_Senpai

    Abu_Senpai The Red King

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    This is great news! It was so damn annoying to continuously disable AVLS on the Slim Vita.

    I downgraded to the 1000 model, so this is no longer an issue for me. But i now how it feels to repeatedly, go into settings and disable it again and again.
     
  15. aos10

    aos10 how i fotochop?

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  16. isoboy

    isoboy GBAtemp Fan

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    I can toggle it. I guess mine (white 1000 3g bought used) is an early one.
     
  17. Frezzno

    Frezzno Member

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    Haha, I don't need this. Got an early vita 1000 3g then. But cudos on a job well done.
     
  18. PeadyJ

    PeadyJ Member

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