[How To] Trick your iphone/ipod to think it's a different FW

Discussion in 'iOS Jailbreak & Cydia' started by jonesy44, Feb 2, 2009.

  1. jonesy44

    jonesy44 New Member

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    I will refer to the device as an iphone even if it's an ipod, it's the same thing

    If you need to install some software to your iphone that requires a different firmware to what you already have, this is a little loophole.

    GUI Method
    - SSH into your iphone
    - Navigate to /System/Library/CoreServices
    - Right click "SystemVersion.plist"
    - in winSCP click "Custom Commands" then "Enter..."
    - run this command
    -- "plutil -c xml1 !"

    Terminal Method
    - Run these commands;
    -- "cd /System/Library/CoreServices"
    -- "plutil -c xml1 SystemVersion.plist"

    Once here, you will need winSCP/SSH app (GUI Method ^)
    - Right click the file SystemVersion.plist
    - Click Edit
    You should know see the file in readable plain text format instead of binary
    This is the text you should see, or something alike.
    Code:
    <?xml version="1.0" encoding="UTF-8"?>
    <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
    <plist version="1.0">
    <dict>
    	<key>ProductBuildVersion</key>
    	<string>5F137</string>
    	<key>ProductCopyright</key>
    	<string>1983-2008 Apple Inc.</string>
    	<key>ProductName</key>
    	<string>iPhone OS</string>
    	<key>ProductVersion</key>
    	<string>2.1</string>
    </dict>
    </plist>
    
    - where you see
    Code:
    <key>ProductVersion</key>
    <string>2.1</string>
    - simply change the number "2.1" or your current FW Version to whatever you need/want
    - Save the file
    - Optional Convert it back to binary using "plutil -c binary1 SystemVersion.plist"
    - Re-spring iphone
    - Install the app
    - Use the same method to change back to your original FW (not sure if this is important, yet)
  2. spoonforknife

    spoonforknife Retired Moderator

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    You can also use gojohnnyboi's FWChanger application, available on Cydia and Installer.
  3. nikj14

    nikj14 Active Member

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    Device:
    iPhone 3GS (Black)
    or you kno u could use FWChanger from cydia

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    Edit: spoony beat me
  4. jonesy44

    jonesy44 New Member

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    Haha, as i posted on another forum later on; "I really hope this hasn't been done before, in an easier way or just generally done before.. whatever, it works!"

    Ohwell, it worked i suppose

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