Normally this isn’t really a big deal (assuming that there is a hack for it), but in this case, it was a little more complex, as he didn’t have working wifi.

PwnageTool has a great feature where you can add Cydia Packages to a custom firmware, so that you can prepackage the firmware already to go.

So, I opened up PwnageTool, added the http://repo666.ultrasn0w.com/ site to the Cydia sources section in advanced, and tried to load in Ultrasn0w.

Life isn’t easy, and it didn’t work.

But why didn’t it work?

I took a look at a working site, and checked out the differences between their package section and Ultrasn0w’s.

Ultrasn0w is hosted on repo666.ultrasn0w.com
While their website doesn’t really tell you much useful information, a bit of googling lead to some info.

The .deb file (debian package file) on their site is at http://repo666.ultrasn0w.com/ultrasn0w.deb

Cydia usually needs stuff in a particular format, so I next checked out how one makes a repository.
This is documented at Saurik’s site here – http://www.saurik.com/id/7

Basically, you throw files into a folder and make a Packages file.

The example given on Saurik’s site is this:

/web/apt/xmpl]# dpkg-scanpackages -m . /dev/null >Packages
** Packages in archive but missing from override file: **
com.saurik.myprogram

Wrote 1 entries to output Packages file.
[root@desktop:/web/apt/xmpl]# bzip2 Packages
[root@desktop:/web/apt/xmpl]# ls -la *
-rw-r--r-- 1 root root 906 2008-07-01 07:48 MyProgram.deb
-rw-r--r-- 1 root root 380 2008-07-01 08:00 Packages.bz2
[root@desktop:/web/apt/xmpl]#

So, it appears we need a Packages.bz2 file.

Being adventurous, I decided to setup my own repo, and stuck the .deb file for Ultrasn0w in there.
Followed the instructions and created the Packages.bz2 file.

Tried again in PwnageTool, and… No go.

Hmm.

Does http://repo666.ultrasn0w.com have a Packages.bz2 file?
Why yes it does.

Take another look at the working one – ahah says my brain.

They point the folder to the _uncompressed_ Packages file.
I guess PwnageTool doesn’t support compressed Package list files.

So, I try that out using an uncompressed file.
Created the Packages file with

dpkg-scanpackages -m . /dev/null >Packages

and try again.

Better – I’m getting a result now with my repo when I click refresh.
However, I can’t seem to be able to download any files…

So, lets take a look at whats happening in my apache logs.


58.37.213.199 - - [07/Mar/2011:20:50:52 +0800] "GET /dists/Packages HTTP/1.1" 200 1643 "-" "PwnageTool/4.2 CFNetwork/454.11.5 Darwin/10.6.0 (i386) (iMac9%2C1)"
58.37.213.199 - - [07/Mar/2011:20:51:06 +0800] "GET /./mobilesubstrate_0.9.3228-1_iphoneos-arm.deb HTTP/1.1" 404 1184 "-" "PwnageTool/4.2 CFNetwork/454.11.5 Darwin/10.6.0 (i386) (iMac9%2C1)"
58.37.213.199 - - [07/Mar/2011:20:51:42 +0800] "GET /./ultrasn0w.deb HTTP/1.1" 404 1164 "-" "PwnageTool/4.2 CFNetwork/454.11.5 Darwin/10.6.0 (i386) (iMac9%2C1)"


Aha! While its successfully found the repo now, its looking for the files in the wrong folder – my repo is in /dists, and its looking in the root folder.

Seems the Saurik instructions are a bit mangled, or the Package generator is a bit silly.
Quick look at the helpfile shows it needs the folder via -m

So I went up a level, and regenerated my file.


cd ..
dpkg-scanpackages -m dists > dists/Packages


Yes, it works!

Now PwnageTool can download my file finally. Yay!

I just need to select it in PwnageTool / Packages as below, and build my ipsw to test.

Now I can finally make my own Ultrasn0w firmware woohoo!
Not as hard as it seems, but not as easy either!

I’ll leave my UltraSn0w repo at http://www.sheed.com/dists/ for now, but will probably move it elsewhere at some point, and update this post. So, if you need it, get it while you can.

Lawrence.

Today I had another crack at enabling MMS on a 2G. For some reason not much documentation, and too much misinformation out there on the net.

Guaranteed working instructions for China Mobile users below:

Note #1 – this is for 2G iPhones only. 3G and newer phones, skip to the MMS settings at the bottom of the post, and put those in Settings / General / Network / Cellular Data Network…

Note #2 – 2G users – if you used BlackRa1n to jailbreak, this will not work either, and will b0rk wireless. Use PwnageTool, and create a 3.1.3 jailbroken / boot neutered (carrier unlock) firmware, install that first, then continue.

iPhone 2G users –

Install 3.1.3
Jailbreak with usual steps.
Add cydia.ifoneguide.nl in Cydia / Sources
Wait a bazillion years for cydia to timeout with the various blocked in China repositories.
Click Search
Download Activate 2G MMS
Reboot

Normally we’d be done, however the MMS settings won’t let us save a diffferent MMS and GPRS name, so we need to install a specific IPCC (iPhone Carrier Setting file) for China Telecom.
As China Telecom is (at time of writing) not an official iPhone supplier, they don’t have an IPCC file, so we need to roll our own.

Here’s one I found earlier – ChinaMobileCarrierSettingsWithMMS.zip

Download that, unzip, and throw on the desktop.

We’ll need to tell iTunes that its ok to use the IPCC file first, so close iTunes.
Now head off to terminal (or a DOS window for those on Windows), then paste this in.

Mac users:
defaults write com.apple.iTunes carrier-testing -bool TRUE

Windows users:
(32 bit)
“C:\Program Files\iTunes\iTunes.exe” /setPrefInt carrier-testing 1

(64 bit)
“C:\Program Files (x86)\iTunes\iTunes.exe” /setPrefInt carrier-testing 1

Done?

Ok, now open iTunes again, connect the phone if its not connected, and..

Mac Users:

Press + hold down Alt(option), and Click “Update”

Windows Users:

Press + hold down shift, then Click “Update”

iTunes will prompt you for a file.
Choose the IPCC file you downloaded.

Sync the phone.

Finally… shut the phone off again.

Once you power up again, you should be able to send/ receive MMS!

If its not working for you, check that the settings are in there –

Settings / General / Network / Cellular Data Network

(anything not listed below should be empty)

Cellular Data
APN -> cmnet

MMS
APN -> cmwap
MMSC -> http://mmsc.monternet.com
MMS Proxy -> 10.0.0.172
MMS Max Message Size -> 300172

Tested, and working on lots of 2g iPhones.