iPhone 4 Unlocked by Dev-Teams’ Ultrasn0w 1.0-1!

The most well-known online iphone hacking group the iphone dev-team just announced that the iPhone 4 has been unlocked by the updated ultrasn0w 1.0-1(via the official blog here).

iPhone 4 Unlocked by Ultrasn0w from Dev-Team


Version 1.0-1 of ultrasn0w works for:

  • iPhone4 baseband 01.59
  • 3G/3GS basebands 04.26.08, 05.11.07, 05.12.01 and 05.13.04

(If ultrasn0w doesn’t show when you search Cydia, add the repo:  repo666.ultrasn0w.com)


My Fix: Cydia’s Host Unreachable Error

Cyida became unusable last week here in my case, just after I restored to the firmware 3.1.3. Whenever I tried to do some updates on it, I always got the error message of ‘Host Unreachable‘ and related blablabla. Even the official one apt.saurik.com is no luck. BTW, All this happened in my two Wifi avaiable spots: office and home(I didn’t try in the cellular network, ‘Coz I don wanna run the application that way).

The solution is actually easy, just remove those bad URLs who causes this errors. As to why even the offcial apt.saurik.com is reported as bad url(Manage->Add Source), please don’t ask me.

But how to remove?

In my case(just after a fresh restore), a USB solution is the only choice, either DiskAid or 91 Assisant Suite for iPhone, as far as I know.

I will not choose 91, because I know it will install its daemon on the device and that’s conflict with my power-saving principle(daemon as few as possible). Please help me to confirm that I’m right here, ‘Coz I assume DiskAid uses the already installed and running jailbreak demons which I’m not sure what it is and if it’s ok to toggle off.

OK, now please launch your DiskAid with iphone connected and check to clear up the following things:


Remove all the existed unavailable sources(lists and downloaded packages) accordingly. For me, I removed all(Make your decision here, please, since I just wanna a quick and dirty solution).

Now launch Cydia and manually add the sources you want. Here’s mine until now(see, the official one is deletable as well.Actually I did try some other sources, but all reported as bad.):

There maybe some cons that I haven’t realized yet, to my quick and dirty solution, so please share with me if you know more by the comments.

Anyway, I’ve got what I want(iCostaPY 3.0, Cycorder and 91进程管理) from Cydia, and I’m a happy Cydia user now.