Overclocking iPod Touch - iPhone 2G/3G/3GS CPU?

The iDevice in your hand (iPhone 2G, 3G, iPod Touch) is factory fitted with ARM Cortex processor having more Hz speed than you think. But that has been underclocked to provide effective Battery life.

That is clear that the processors fitted in the device are not fully harnessed, but it is possible with overclocking process. But your device should be Jailbroken tp process that method. The actual processing capabilities of iDevices are :

iPhone 2G/3G = 600 MHz (underclocked to 412 MHz)
iPhone 3GS = 833 MHz (underclocked to 600 MHz)

Steps to Overclock the CPU (iPhone 2G, iPhone 3G, iPhone 3GS, iPod Touch)

1. Using a SSH tool like Filezilla or iPhone Folders navigate to
   System/Library/System/System Configuration/PowerManagement.bundle
2. Rename file “com.apple.SystemPowerProfileDefault.plist” to  “SystemPowerProfileDefaultbak.plist” or whatever different.
3. Reboot, and your iPhone/iPod Touch would Run on native Processor clocks.

Note: 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. HelpSource(1)

How to unlock iPhone 3GS firmware 4.3.3 on 5.16 Baseband

WARNING: DO NOT install the iPad baseband on the 3GS. The newer 3GS (week 36 & above of the year 2011 (Serial No:xx136xxxxx)) will DEFINITELY brick your device during 06.15 baseband flash. It has been confirmed to permanently damage the built-in radio hardware, thus rendering it useless pretty much forever.  As of now the only solution is to return to Apple store & get it replaced.

Here is a complete step-by-step guide to jailbreak and unlock iPhone 3GS 05.16.01 or 05.16.02baseband on iOS 4.3.3. For those who do not know, restoring stock iOS 4.3 IPSW on your iPhone upgrades its baseband to 05.16.01 and restoring stock iOS 4.3.1, iOS 4.3.2 or iOS 4.3.3 IPSW will upgrade your iPhone 3GS baseband to 05.16.02. As both of these bands are less in value than 06.15.00, so it is technically possible to upgrade them to iPad baseband which is unlockable using Ultrasn0w 1.2.3.

WARNING: After upgrading your iPhone 3GS to iPad baseband, you MIGHT lose your GPS functionality. MuscleNerd of iPhone Dev-Team has already promised to devise a downgrade method for iPhone 3GS/3G iPad baseband users which should restore GPS functionality. Before continuing, please read the conclusion at the end of this note.

 

Jailbreak iOS 4.3.3 on iPhone 3GS on Windows or Mac Using Redsn0w:

These steps below will help you to jailbreak and upgrade your iPhone 3GS 05.16.01 or 05.16.02 baseband to iPad baseband. If you are already jailbroken on iOS 4.3.3 but do not have iPad baseband, you still need to follow the steps below to re-jailbreak and upgrade your baseband to 06.15.00. If you are already jailbroken on iOS 4.3.3 and have iPad baseband, skip to step 18.

1. Download Redsnow 0.9.10 beta3
2. Download iOS 4.3.3 IPSW o.f.(official firmware) for iPhone 3GS from here.
3. Launch Redsnow 0.9.10 beta3 and click on the Jailbreak button and put your device on DFU mode by following the instructions.
   
   
   
4. Select iOS 4.3.3 IPSW which you downloaded in step 3 and let Redsn0w to process the provided IPSW.
5. Once IPSW has been successfully processed and identified, click on the Next > button.
6. Now wait while Redsn0w patches the kernel of the provided IPSW.
7. ( Update: Please read the Updates section towards the end of this post first before proceeding. )
   Choose Install Cydia and Install iPad baseband from the available jailbreak options. If you have jailbroken your device already, then please do not tick the Install Cydia option again.

8. Now wait while Redsn0w fetches the iPad baseband files. This will take sometime depending on the speed of your internet connection, so be patient.

9. Once iPad baseband files has been downloaded, Redsn0w will patch the iBoot of your iPhone using Limera1n exploit.
10. Now wait while Redsn0w uploads the patched ramdisk to your iPhone. Once done, your iPhone will reboot automatically.
11. Thats it. Click on the Finish button to close Redsn0w. Rest of the process will be done on your iPhone.
    
12. Once your iPhone has been fully jailbroken and hacktivated on iOS 4.3.3, it should be running iPad baseband. To confirm this, go to Settings -> General -> About and see the value in-front of Modem Firmware. It should be 06.15.00 which represents iPad baseband.
    
13. Go to Cydia and install Ultrasn0w 1.2.3
    
    
    
14. Once done, reboot your iPhone and enjoy your fully jailbroken and unlocked iPhone 3GS on iOS 4.3.3.

     

//##  -- >> Special Note

• If your bootrom is NEW then choose YES and if your bootrom is OLD then choose NO.
• First choose Cydia in step 9 and complete the procedure. Re-run Redsn0w (Skipping step 1, 2, 3 & 4) and choose Install iPad baseband in step 9. Do NOT choose Cydia and Install iPad baseband at the same time.

[FIXED] iPhone 3GS stucked in DFU after 4.3.3 upgrade

Ok, so you might have restored your iphone 3gs using 4.3.3 ofw(official firmware) or cfw(custom firmware) using sn0wbreeze and also it might went into DFU mode loop. NOT recovery. All there could be a black screen.

I had also faced the problem problem with my 3GS. And I fixed it using redsnow beta 0.9.10b3.

Here is the stepwise description of the fix:

1. Download Redsnow 0.9.10 beta3
   
   
   
2. Download offical 3GS firmware 4.3.3 for 3GS
3. Run redsnow beta 0.9.10b3 and click on “Extras” command button
   
   
4. Put your device on Pwned DFU by clicking on  “Pwned DFU” command button
   
   
5. Create custom firmware preventing baseband update
   
   This will create a custom firmware file that will prevent baseband upgrade in the same folder with “NO_BB” prefix in the file name.
6. Start TSS server using Tiny Umbrella and restore the newly created custom firmware using iTunes.
   

That's all! Now Jailbreak the device using the same version of Red Snow.

Follow the printed instructions. And here you go with your device jailbreaked. :) Now unlock it using ultrasn0w using this guide http://iguidespot.blogspot.com/2012/01/how-to-unlock-iphone-3gs-firmware-433.html.

iPhone 6.15 BaseBand Downgrade is Possible

Hello and a warm welcome to my new iblog iGuideSpot. My name is Mohit Tripathi and also I am an iGeek just like you. What you can expect to read here is all iNews, iTricks and iTips related to Jailbreaking the iDevice, installing Hackintosh on PC and well you can expect some more than that.

 

Well in the first post I would like to share a news that everyone is expecting and wants it to happen. On September 17, 2011, MuscleNerd from iphone DEV TEAM had confirmed in response to a Twitter user’s question that soon they will release something  to downgrade the upgraded iPad baseband 6.15 to 5.XX that can be unlockable using ultrasn0w.

Many people have upgraded their iPhone baseband to 6.15 to unlock the device to work with any carrier, but this upgrade have caused the GPS issue. Everyone who have upgraded their device baseband to 6.15 are experiencing the GPS issue and expecting a fix to downgrade this. It’s been almost 4 months and the fix is about to release very soon.
Till then keep fingers crossed!