Hier misschien de oplossing voor het probleem:
Securely wipe your iPhone the guide ! iPhoneFreakz
the following tutorial permanantly scrambles your Addressbook, Calendar, Notes, callhistory, voicemail, SMS,
Safari, Mail and Pictures and everything else you have on your iPhone media partition.
I will explain what you have to do, but you need to know some things first.
The iPhone or
iPod comes in different flavors (4gb, 8gb, 16gb and last but not least 32gb).
Although the sizes of the iPhone are different, the way the disk is partioned (divided) is the same.
You have 2 partitions (1 system that normally holds about 300mb and 1 data (music,
video’s, mail, contacts,etc) that holds the rest.
What we need to do is get everything off the Data partition. How are we going to do this ?
We will use some basic commands (where you will only have to type 2) to really destroy all of your personal data.
WARNING : Only do this if you are planning to sell your iPhone or if you need to return it to Apple
This tutorial only works on a jailbroken phone !
1) If you don’t have a jailbroken iPhone, use one of my
beginners guides to get it jailbroken.
2) Make surz you have installed the BSDSUBSYSTEM and the
OPENSSH packages.
3) Go to our
sources page and add the iPhoneFreakz.com
source.
4) Open the
installer and go to the iPhonefreakz category. Install the
Erase Utility.
5) Connect your iPhone to your wireless network.
6) Connect with a
SSH client to your iPhone (
Putty, or whatever client you prefer)
7) Log in with the username root and password alpine
8) copy and paste the following command
/usr/bin/find /var/mobile/ -type f -exec /usr/bin/shred -u ‘{}’ \;
9) Wait a longggggggg time ..(it’s best you let this run and come back after some time .. )
10) Once the command is finished no one will ever find any personal information back on your iPhone.
11)
Restore your iPhone and give it away (i can always use a extra iPhone

or sell it now with confidence that your personal data won’t be retrieved.
Enjoy
gr,
Multinova