Select your stock 4.1 or 4.0 ipsw (you’ve already used this to update your device to 4.1 or 4.0)
Select “Install Cydia” and any of the other options shown above, then click “Next”. Use DFU mode to install the jailbreak.
This is still beta, so there might be some problems:
Any Windows users seeing “Waiting for reboot” for too long (more than 20 seconds or so), please try “shaking” the JB process by unplugging then replugging your USB cable (while letting redsn0w continue to run). Also, try using a USB port “closer” to your computer (as opposed to on your monitor or behind another hub).
As usual DevTeam reminds us:
IF YOU USE THE ULTRASN0W UNLOCK, PLEASE WAIT FOR PWNAGETOOL TO SUPPORT 4.1. DO NOT USE REDSN0W
That’s because to use redsn0w at 4.1, you need to already have updated to official 4.1 from Apple. If you do that, you lose the ultrasn0w unlock (possibly forever).
Chronic Dev-Team member Joshua Hill has just confirmed that the new Greenpois0n jailbreak, which will allow you to jailbreak Apple’s latest iOS 4.1 software, is expected to be released this Sunday. To make the event more special, Dev-Team has decided to launch the tool at 10 past 10 AM on October 10th 2010. They will be releasing multiple tools, some of which will help you update to 4.1 without losing the possibility of unlocking your baseband for other carriers.
Run RedSn0w and point it at the 4.0 IPSW. (Yes – point it at the 4.0 IPSW even though you're at 4.0.2). This will also hacktivate your iPhone3G at 4.0.1 if you haven't already been activated by iTunes.
If you need a carrier unlock - install ultrasn0w in Cydia (add repository http://repo666.ultrasn0w.com). For T-Mobile in the USA remember to turn off 3G mode in Settings→General→Network.
Some users say that they have problems, while trying to use the JailbreakMe.com service. They simply can not browse the site! We decided to solve this issue, so you can unlock iPod touches, iPads and iPhones. Follow these instructions to achieve a positive result!
Step 1: Instead of typing http://www.jailbreakme.com, enter http://jailbreakme.com/index.html, it will take you directly to the site that really works.
Step 2: If the above does not work, use the Canadian extension as follows http://www.jailbreakme.ca. App Advice claims that it is a mirror redirecting you to the current website version.
In addition, remember that JailbreakMe will work only on your Apple devices, running on iOS 3.2.1/iOS 4.0.1 or below.
The recently released application MiTime for the iPhone 4 fixes and activates FaceTime on unlocked iPhone 4s that run on T-Mobile USA or other unofficial unsupported carriers. According to the MiTime’s description, it should work with almost any carrier in the world. You should be able to receive international SMS messages to activate FaceTime via MiTime.
The application MiTime sends two international SMS messages for activation, so it can not be free. Thus, until there is no other way to activate FaceTime on unlocked iPhone 4s, this is the only way with an affordable price.
The U.S. Patent and Trademark Office revealed a patent application from Apple entitled "Systems and Methods for Identifying Unauthorized Users of an Electronic Device." The invention describes methods to identify users through a picture, the sound of their voice, or even their heartbeat.
"The photograph, recording, or heartbeat can be compared to a photograph, recording or heartbeat of authorized users of the electronic device to determine whether they match," the application reads. "If they do not match, the current user can be detected as an unauthorized user."
If an unauthorized user were to attempt to access an iPhone or another device, the owner of the handset could be notified via a phone call, text message or e-mail. It could send the owner - or the police - a picture of the unauthorized user, or other information specific to the potential thief.
The handset could recognize an unauthorized user if they do certain uncharacteristic activities with the phone, such as hacking, jailbreaking, unlocking, or removing a SIM card.
Have you already updated your device to the version iOS4 and want to unlock your 3GS? Firstly there was Redsn0w, now PwnageTool is available, which can easily help you. Here is a simple and easy tutorial for jailbreaking iPhone 3GS (old bootrom). Warning: this is not an official release and therefore may be some bugs that can destroy your device or delete some important information. So be careful while using it!
Social Bicycles - a bike sharing system with a twist – plans to start using an iPhone application, the system allows users to drop off, locate, and borrow a bike nearly anywhere. The bikes are equipped with a GPS device which is locked to one of the wheels, and when the bike is locked, it's locatable using the application, so that someone can borrow it; when it's in use and unlocked, it doesn't appear in the app. The real upside to Social Bicycles is that the regular infrastructure required for bike lending systems are unnecessary, which can make lending much cheaper.
As you might know iPhone 4 is available unlocked in many different countries around the globe. The prices vary a lot.
Filip Chudzinski from Germany put together a comparative chart with iPhone 4 prices. As you can see below it can often be well worth it to order your iPhone 4 in a different country (you’ll need an intermediary), or even just going across the border.
Update: some users report that this chart contains errors, so do not forget to check everything before traveling around the globe.
Update 2: the data is not valid at least in Finland and Sweden.
Apple’s iPhone 4 handset is scheduled to hit Canadian stores this Friday. According to a recent report by CBC, Canadian customers will have the option of buying the phone unlocked, directly from Apple: