1. Jailbreak iPhone 4.0 using Redsn0w 0.9.5, we have posted guide here.
2. Now follow our guide to downgrade iPhone 4.0 baseband using Fuzzyband Downgrader
3. Once you have jailbreaked & downgraded iPhone 3G 4 OS go to Cydia, Manage tab at the bottom.
Note: T-Mobile users should disable 3G before installing ultrasn0w.
4. Click on “Edit” and then on “Add”. You will be prompted to enter a url source. Type “http://repo666.ultrasn0w.com” and click on “Add Source”.
5. After successfully adding repository search for ultrasn0w in cydia and install the application
6. Restart your iPhone.
1. If you are iPhone developer then you can head over to Apple site and download iPhone OS 4.0 firmware or here is leaked version of iPhone OS 4.0 firmware
(iPhone1,2_4.0_8A230m_Restore.ipsw) for iPhone 3G.
2. Download from iPhone OS 4.0 HERE and install iPhone OS 4.0 on your iPhone 3G
3. Download Redsn0w 0.9.5 for Mac OS X from redsn0w.com
4. Launch the Redsn0w 0.9.5
5. Select your stock iPhone1,2_4.0_8A230m_Restore.ipsw file (you’ve already used this to update your iPhone3G to 4.0beta1)
6. Select “Install Cydia” and click “Next”. Use DFU mode to install the jailbreak.
7. When your iPhone3G comes back up, you’ll notice Cydia has a blank white icon. You’ll also notice Cydia has no sources. Go to the Sources panel and add this repo: http://apt.saurik.com/cydia-3.7 (be sure you have a carrier or wifi signal first!).
When Cydia restarts, you should see its real logo now, and the standard sources should be ready to use.
How to Downgrade iPhone OS 4.0 Baseband 05.13.03 Using Fuzzyband Downgrader
1. Launch Cydia from your springboard, and go to systems under section tab
2. Press to select 3G Fuzzyband Downgrader from the list of packages & click on install.
3. After installation is completed successfully return to cydia and press home button and launch Fuzzyband.
4. A message will be displayed if your bootloader is not supported, If you have the 5.08 bootloader you will be able to downgrade from baseband 05.13.01. Press the Downgrade button to begin downgrading your baseband.
5. Once the downgrade has completed successfully you will be displayed a Done! message saying, “I Haz Downgrade!”
Here is the news from Dev Team regarding jailbreak and unlock iPhone 3G and 3Gs firmware 4.0
PwnageTool 4.0 Release Info
On Monday, Apple released firmware 4.0 for the iPhone and iPod touch devices. This of course was a major upgrade.
As advised, you shouldn’t have upgraded your devices if you have previously relied on our tools for hacktivation and/or a carrier unlock.
With that said, today we are releasing PwnageTool 4.0
PLEASE READ THIS ENTIRE POST CAREFULLY, THERE ARE KNOWN UPGRADE TRAPS AND DIFFERENT UPGRADE SCENARIOS THAT NEED TO BE FULLY UNDERSTOOD AND CONSIDERED BEFORE USING THESE TOOLS.
Each supported device has few different scenarios that users need to consider when performing the upgrades, you need to check below and perform the upgrade in the particular way that matches your current device state.
NB: With PwnageTool 4.0 certain devices are not supported this is because they are not supported in iOS 4.0 or they are not supported by our software. We’re working on ways to get past these restrictions.
iPhone 2G - not supported
iPod Touch - not supported
iPod Touch 3G - not supported
PwnageTool 4.0 only recognizes the official IPSWs that came out yesterday. If you had developer access to the “4.0 GM” IPSWs, do not try to use those.
iPhone 3GS
Summary: Currently, PwnageTool only works on previously jailbroken 3GS devices with the old bootrom.
If you have a Jailbroken iPhone 3GS with the OLD BOOTROM and you DID NOT use Spirit to jailbreak then you can create the ipsw with PwnageTool 4.0 and restore with your jailbroken recovery mode.
If you have an iPhone 3GS with the NEW BOOTROM this is NOT supported by PwnageTool 4.0
iPhone 3G
If you have a Jailbroken iPhone 3G at 3.1.2 (but not jailbroken with Spirit) then you should create the ipsw with PwnageTool 4.0 and restore from recovery mode or DFU mode.
If you have an out of the box iPhone 3G you should restore using a PwnageTool 4.0 ipsw using DFU mode.
If you have a Jailbroken 3.1.3 iPhone 3G it is very possible that this can fail from recovery mode, if this failure happens you will need to restore using DFU mode.
As an alternative to PwnageTool, you can use redsn0w on iPhone 3G (on both Windows and Mac) as mentioned in our last post.
IMPORTANT! Whenever you need to enter DFU mode, you will need to do so using PwnageTool. iPod touch 2G
If you have an iPod touch 2G (non-MC model) that is jailbroken (but not with Spirit) then you can restore using recovery mode.
As an alternative to PwnageTool, you can use redsn0w on non-MC iPod Touch 2G (on both Windows and Mac) as mentioned in our last post.
Baseband Unlock
As you probably know by now, ultrasn0w has been updated to cover all basebands from 04.26.08 onward. Many thanks to @sherif_hashim for finding the crashing command that the new ultrasn0w 0.93 uses! He worked hard at finding the crash, and he kept it confidential until the right time to use it.
Major props to @oranav (who found the earlier +xlog crash). He also had this crashing command!
iPhone 3G and 3GS baseband unlockers (those who rely on ultrasn0w to make phone calls) should always be very wary to update their firmware, however our Ultrasn0w application will unlock all recent (including the current) 3GS and 3G baseband firmware versions. Once you are jailbroken using PwnageTool 4.0, install ultrasn0w from Cydia and you’ll be unlocked.
Remember! This baseband unlock situation is rare, should you upgrade your iPhone blindly at the next iOS release please don’t expect an unlock - but for now you are OK (whatever state your baseband is in).
Official Bittorrent Releases
PwnageTool 4.0 Torrent - PwnageTool_4.0.dmg.5644414.TPB.torrent
SHA1 Sum = 15bdb90ec40f1e279bb648eb7e9d90ebe07b66d2 Unofficial Mirrors
The following links are unofficial download mirrors, you download these archives at your own risk, we accept no responsibility if your computer explodes or if it becomes part of a NASA attacking botnet or even worse if your hands fall off mid-way during the use of these files. We do not check these links and we accept no responsibility with regard to the validity of the files, the other content that these links may provide or with the content that is on the third-party linked site. Always check the files that you have downloaded against our published SHA1 hash.
We would prefer that you downloaded the official bittorrent release that is linked above, but you are welcome to try these if you really must. Mirror owners should email direct dmg download links only (no rapidshare or filesharing sites please) to blog@iphone-dev.org — please don’t place mirrors in the comments as they will be deleted. Austria
Around an hour ago the new version of the iPhone Operating System (now called ‘iOS’) was released. iOS 4 is a huge release for Apple with many many changes and those changes offer slick additional features.
These new features are being offered by Apple as a free upgrade to qualifying devices.
We are working hard on a release to our tools that will jailbreak your device (or give you iOS 4 via the jailbreak train) and provide you with a carrier unlock.
Until these tools are released you should hold off on updating your device until we have fully tested our tools with all the relevant devices. If you rely on hacktivation or a carrier unlock (ultrasn0w) then you should not upgrade until we have fully tested and released our tools.
Don’t be tempted with unofficial PwnageTool/redsn0w bundles or releases, just check here or our team twitter for real time release information.
Remember, we risk our devices so you don’t have to (but this time anyone who has made a mistake upgrading their baseband firmware should be OK real soon ;) Now! :)
Update #1: redsn0w beta has been updated to hacktivate iOS 4.0 for iPhone3G (in addition to jailbreaking the iPhone3G and iPod Touch 2G). The download links for redsn0w 0.9.5b5-4 are:
For now, the redsn0w beta release supports only the iPhone3G and iPod Touch 2G at today’s 4.0. It’s still a beta, so you’ll need to let Cydia reorganize, reload, and update after using redsn0w. Update #2: There’s a new redsn0w beta (links were changed above) that should fix any iBooks problems people were seeing. Just run this new version 0.9.5b5-4 and deselect Cydia (you don’t want to reinstall Cydia over itself).
When you diassemble MacBook, you will find a regular SATA harddisk ( normally Fujitsu ), which means you can easily upgrade MacBook Harddisk with a bigger capacity. Just get a regular SATA HD and replace it.
The monitor can be replaced with Samsung Monitor, same quality and cheaper.
