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Thread: How to Overclock iPhone 3G, 3GS, and 4!

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Putting it after the file systems are mounted won't work either. Try running sysctl -w hw.cpufrequency in a SSH Terminal, It will say its only read not write, Its not
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  1. #61
    Green Apple Hexane's Avatar
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    Putting it after the file systems are mounted won't work either.

    Try running sysctl -w hw.cpufrequency in a SSH Terminal, It will say its only read not write, Its not linked with anything to write to.

    I thought I mentioned that in a previous post

  2. #62
    Green Apple iwannamod's Avatar
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    Uhh..question.. How come my fstab file doesnt have the changable scripts? It only shows the dev disks things?

  3. #63
    What's Jailbreak? DaAwesome1's Avatar
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    ^^ You gotta add it. It doesnt come with it.

  4. #64
    Green Apple iwannamod's Avatar
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    Quote Originally Posted by DaAwesome1 View Post
    ^^ You gotta add it. It doesnt come with it.
    Oh. Haha. Ok thanks.

  5. #65
    iPhone? More like MyPhone dale2's Avatar
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    Quote Originally Posted by Hexane View Post
    Putting it after the file systems are mounted won't work either.

    Try running sysctl -w hw.cpufrequency in a SSH Terminal, It will say its only read not write, Its not linked with anything to write to.

    I thought I mentioned that in a previous post
    i hadnt read it
    but i followed your advice, and i got this

    xxxxx:~ root# sysctl -w hw.cpufrequency=600000000
    sysctl: oid 'hw.cpufrequency' is read only
    xxxxx:~ root#

  6. #66
    Green Apple
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    i tried this on the iphone 4 and it ****** my phone up bad. Had to restore and now my mms will not work and my edge data plan doesn't work either.

  7. #67
    iPhone? More like MyPhone
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    Quote Originally Posted by igarys View Post
    i tried this on the iphone 4 and it ****** my phone up bad. Had to restore and now my mms will not work and my edge data plan doesn't work either.
    You had to do it wrong then cuz I just did this to my 3Gs ans my dads IP4 and they work like there on Speed =}

  8. #68
    iPhone? More like MyPhone
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    Quote Originally Posted by igarys View Post
    i tried this on the iphone 4 and it ****** my phone up bad. Had to restore and now my mms will not work and my edge data plan doesn't work either.
    You will have to do a clean restore. What ever mistake you made while doing this stayed with your back up file. So after restore set up as "new phone".



    I tried this on my 3G and damn it does kind of feel more responsive ... haven't tried it on my i4 tho, that thing is fast as is

  9. #69
    What's Jailbreak?
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    Default Hey
    How high can i go on the iPhone 4??

    su

    sysctl -w hw.cpufrequency_max=
    sysctl -w hw.cpufrequency=
    sysctl -w hw.cpufrequency_min=

  10. #70
    Green Apple
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    Quote Originally Posted by cocoabean772 View Post
    You had to do it wrong then cuz I just did this to my 3Gs ans my dads IP4 and they work like there on Speed =}
    What speed did you set yours too? I set it to 850 and it made me restore.

  11. #71
    iPhoneaholic XFaega's Avatar
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    Hard to till if anything has changed. My i4 is clocked at 950/950/950.

  12. #72
    iPhone? More like MyPhone
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    Quote Originally Posted by igarys View Post
    What speed did you set yours too? I set it to 850 and it made me restore.
    I set my 3Gs to 750 750 550 and my dads IP4 to 900 900 700

  13. #73
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    So far I've tested my iPhone 3GS, My dad's 4 and my mom's 3G.

    I've been playing it safe and have noticed an increase on all three phones at these speeds.

    3G -- 600/600/50
    3GS -- 750/750/50
    4 -- 900/900/50

  14. #74
    iPhone? More like MyPhone RobberBoy's Avatar
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    still the same for my 3G set to 550.. hmm... ima stick to plist edit.. its fast and save battery for some reason.. or just my feeling.. ;P

  15. #75
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    Thanks. I am trying out the 900/900/700 settings seem to be working. Did anyone else try anything higher?

  16. #76
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    Quote Originally Posted by Ryn0ck View Post
    So far I've tested my iPhone 3GS, My dad's 4 and my mom's 3G.

    I've been playing it safe and have noticed an increase on all three phones at these speeds.

    3G -- 600/600/50
    3GS -- 750/750/50
    4 -- 900/900/50
    Safe? isn't iPhone 3G CPU at it's max there?

  17. #77
    Green Apple
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    I didn't see this so sorry if it has been posted. let's say i have a crazy long day w/o charging access. has anyone tried underclocking any of them and see if the batt life is extended at all?

  18. #78
    Livin the iPhone Life eddietah's Avatar
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    I don't dare to try cos I don't want to brick my iPhone

  19. #79
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    600/600/50 on 3G 3.1.2 was more responsive and really did fell a lot faster but I had to removed the mod because it caused a dramatic drop in battery life. I'll take longer battery life over speed any day.

  20. #80
    Green Apple
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    ok so i was wondering since u guys found out how to overclock now is any way of making it a cydia tweak so it auto changes the files for you and reboots your phone so we dont screw our phones up?

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