unapproved charging device

Discussion in 'iPhone' started by swordfish5736, Aug 24, 2008.

  1. macrumors 68000

    swordfish5736

    Joined:
    Jun 29, 2007
    Location:
    Cesspool
    #1
    So i picked up a new car last week with an aftermarket stereo. It has an ipod hookup with it but it gives me the this device isnt approved for charging and wont do anything.

    I thought i remembered awhile back reading that sometimes jailbreaking the phones can bypass this but never tried it with my V1 jailbroken iphone.

    So can jailbreaking fix this?
     
  2. macrumors 604

    SFStateStudent

    Joined:
    Aug 28, 2007
    Location:
    San Francisco California, USA
    #2
    The new 3G iPhones are not compatible with many of the v1 iPhone power sources. I have a $60 Belkin FM transmitter/charger that just takes up space in my glovebox, due to the change. Sorry, but I ended up buying a nice Griffin charger for the 3G iPhone. :(
     
  3. macrumors 6502a

    Opie

    Joined:
    Jun 17, 2008
    #3
    I dont believe that jailbreaking will help at all. I had my v1 iphone jailbroke and my ipod touch accessories didnt work.
     
  4. macrumors 65816

    PoitNarf

    Joined:
    May 28, 2007
    Location:
    Northern NJ
    #4
    The exact reason why it doesn't work is because the iPhone 3G does not support charging over the firewire pins in the 30 pin dock connector. Many car adapters for the iPod and iPhone used the firewire charging since it operates at 12 volts which is what your car battery outputs at. The iPhone 3G will only charge with USB chargers which use different pins in the dock connector and also runs at 5 volts. This is a hardware limitation, so jailbreaking isn't going to do anything to help.

    I was in the same boat, so I got this http://store.apple.com/us/product/TK596LL/A?fnode=home/shop_ipod/ipod_accessories/power&mco=MTU5MzY. The cable has a pass-through dock connection, so you can just connect the iPod cable coming from your car stereo into the bottom of it.
     
  5. macrumors 65816

    Joined:
    Aug 25, 2008
    Location:
    Los Angeles
    #5
    I believe this has to do with the amperage draw

    i had an old ipod charger that was only rated for 1/2 amp that no longer works on my iphone 3g

    i would recommend buying the griffin powerjolt for the iphone

    It uses a standard usb connector and comes with an iphone data cable

    Best of all it has an led ring that tells you the status of your charge

    http://www.griffintechnology.com/products/powerjoltiphone/
     
  6. macrumors 65816

    PoitNarf

    Joined:
    May 28, 2007
    Location:
    Northern NJ
    #6
    No, while USB and Firewire charging do operate at different aperages the main reason why the iPhone 3G doesn't work with some older chargers or car adapters is because the 3G doesn't support Firewire charging at all.
     
  7. macrumors 68020

    Diode

    Joined:
    Apr 15, 2004
    Location:
    Washington DC
    #7
    I love how the universal dock is not very universal if they change it from release to release.

    As others stated old chargers might not work because the iphone 3G does not support charging via the firewire voltage where the older phone was able to.
     
  8. macrumors P6

    dukebound85

    Joined:
    Jul 17, 2005
    Location:
    5045 feet above sea level
    #8
    i wonder if any type of adapter will be made aka a female/male part that doubles as a voltage regulator
     
  9. macrumors 68020

    Diode

    Joined:
    Apr 15, 2004
    Location:
    Washington DC
    #9
    While not now, one will be soon.

    Expensive but because it passes the other signals through it will be useful for head unit adapters.
     
  10. macrumors 65816

    PoitNarf

    Joined:
    May 28, 2007
    Location:
    Northern NJ
    #10
    It looks promising, I may have to give it a whirl.
     

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