HowTo Overclock iPhone 2G, 3G, 3GS CPU

iPhone 2G, 3G, iPod Touch 1g possess a decent ARM Cortex processor which has been underclocked to give you more battery life.

So the processors on the devices are not fully exploited, but with overclocking it is very much possible, but only on jailbroken iPhone/ iPod touch. The processor of the iPhone 2G, 3G is indeed 600MHz, but Apple has underclocked it to 412 MHz only, iPhone 3GS instead of 833 MHz it is operated at 600Mhz. But its easy to run them at their factory clocks.

How to Overclock  CPU on iPhone 2G, iPhone 3G, iPhone 3GS, iPod Touch

Step 1. Make sure you have a Jailbroken iPhone/iPod Touch. (Jailbreaking guides)

Step 2. Using a SSH tool like Filezilla, Navigate to System/Library/System/System Configuration/PowerManagement.bundle/

Step 3. Rename file “com.apple.SystemPowerProfileDefault.plist” to  “SystemPowerProfileDefaultbak.plist” or something that device doesn’t recognize.

Step 4. Reboot, and your iPhone/iPod Touch would Run on native Processor clocks.

Important: Increasing the clock speed would degrade the CPU’s lifespan by several minutes. However, since the device is not designed to handle the heat generated at higher clocks, we recommend you to terminate apps if device appears to overheat. Also checkout tips to Prevent Overheating of iPhone

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  • ladbag1714

    awesome, finely one that actually works. now just need to get it to work with the android OS on the iphone 3g dualboot =) let me know if that can happen. cuz i cant wait for that..

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  • ChrisTiong

    Oh, This method dun work, after rename the said file, I use System info Plus on Cydia and check the processor speed still read at 600mhz.
    I try on application and dun see any speed increase at all.
    Im on 3gs firmware 3.1.3 Factory unlock iPhone.

    Cheer.
    Chris

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  • Anonymous

    I have an iphone 2g os3.1.2, normayl is too slow for mos newest games/apps, but whith this trick, its as fasta as 3g, thanx (i use normaly the panda app http://www.pandaapp.com/, is the easiest way to connect directly to iphones/touchs)

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  • Does it work properly ?

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  • phoenix

    i tried it and my cpu clock speed is still 412mhz

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    • Midnightgnx

      how do you know what its running at?

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  • phoenix

    pls i tried it and it didnt work.any help will be appreciated

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  • Still at 412MHz.

    iPhone 3G 3.1.2 Jailbroken with blackra1n

    Please help

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    • Codye83

      mine is running at 600mhz at max and 400mhz at min:) use ifile on your iphone to go in and add to a file or folder. forgot the name but there is a youtube video. my 3g is a shit ton faster now, i love it. and battery is that affected but it is a little bit

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  • Echogecko

    that doesn't work. it just makes the power management for the iDevice unreadable so it doesn't know how to conserve battery life. You have to modify the kernel to gain access to the real cpu speed control

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  • Bl

    This doesn't work.
    CPU Clock Speed is a hardware setting.
    NOT in a configuration file.

    Renaming or editing this file has absolutely no effect.
    If you don't believe me, do a CPU benchmark before and after you rename the file.

    Or even better, use SysInfoPlus to see that the CPU speed is still the exact same.

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  • Jigglywiggly

    It doesn't work, it's in the kernel not a user changeable setting.

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  • Hello, this method doesn't work. I figured out a method which does work and also have proof for it. You can find the proof on http://www.didierstouten.nl/articles/iphone/the

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  • Fuckyoufool

    OK this is bullshit. All this does is tell the iPhone to always run the CPU at full speed even when it is sleeping. Go to terminal or SSH and type sysctl hw.cpufrequency and you will see it doesnt change a god damned thing.

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  • just did it on my iphone 2g works 10x better scared it might overheat now… dont want it to blow up in my face

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  • Cracra52000

    je trouve que maintenent que j’ai overclocker mon iphone 2g on devrai me laissai passer au moin au firmware 4.x

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  • Cracra52000

    I find now that I overclock my iphone 2g we have to let myself go at least to firmware 4.x

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