Aggiornare iphone straniero dal firmware 3.1.2 o 3.1.3 al 4.0.2 con jailbreak mantenendo rubrica, foto e quello che vuoi 
Following this procedure will be possible to update the VS. iphone 3g from a firmware 3.1.2 or 3.1.3 to version 4.0.2 with jailbreak maintaining contacts, photos and anything else you want.
WARNING THIS WAY 'only been tested on iPhone 3G 3.1.3 WITH OLD iBoot: 359.3.
REQUIREMENTS TO UPGRADE:
1) Iphone 3g 3.1.2 3.1.2 (Old iBoot)
2) Macintosh OSX
3) Windows XP or Vista or 7
4) PwnageTool (link download below)
5) Original Firmware 4.0.2 (download link below)
To check your version, follow this iBoot procedure (Council Procedure on mac):
Put iphone in DFU mode (click to see the procedure for entering in DFU mode).
Computer Windows:
1) Connect the iPhone to pc
2) Go to Start -> Control Panel -> System-> Hardware -> Device Manager
Search 'Controller USB (Universal Serial Bus)
3) Open 'tree by clicking the + and look under' Apple Mobile Device USB Driver '
4) Right click on' Properties', choose details tab "Device Instance Id" from the end of the string you should see the version number of bootrom, eg [iBoot-359.x].
Mac Computers:
1) Connect l'iphone al Mac
2) Aprire System Profiler e navigare su Hardware -> individuare la voce USB nel menu di sinistra
3) A destra individuare la voce periferiche usb, click su 'Apple Mobile Device (DFU Mode).'
Nel pannello di info in basso a destra, individuare la stringa del 'Serial Number'. alla fine di questa strionga troverai la bootrom version, e.g. [iBoot-359.x].
Le vecchie bootrom sono fino alla 359.3
Le nuove bootrom vanno dalla 359.3.1 in poi (359.3.x)
ISTRUZIONE PER EFFETTUARE BACKUP DATI con iphone non jailbreakato:
1) Effettuare backup con itunes o sincrinizzare iphone sempre con itunes
ISTRUZIONE PER EFFETTUARE BACKUP DATI con iphone jailbreakato:
E' possibile eseguire sempre backup con itunes o sincronizzazione oppure (consigliato) usare ssh.
1) Se avete iphone jailbrekkato andate su cydia e cercate il pacchetto OpenSSH
2) Scaricate e installate il pacchetto (avviene in automatico)
3) Andare su impostazioni/generali/blocco automatico e impostarlo su mai
4) Collegatevi in wireless alla vs rete con iphone
5) individuare l'indirizzo ip del vs. iphone (andare su impostazioni/wi-fi cliccare sulla freccetta accanto alla vs wireless e prendere nota del vs. indirizzo ip es: 192.168.0.2)
6) Scaricate WinSCP da qui
7) Aprire WinSCP e cliccare su nuovo
8) inserite l'indirizzo ip noted before
9) enter "root" as username and "alpine" as password
10) wait for the connection and opens a Windows Explorer window is divided in two, right and left of the contents of the iPhone vs the content of the PC .
11) Save by dragging folders from right to left, the data you are interested in this second list:
CONTACTS, NOTES, CALL
private / var / mobile / Library
PHOTOS (photographic film)
private / var / mobile/Media/DCIM/100APPLE
VOICE MEMO
private / var / mobile / Media / Recordings
backup files for the MOBILE SUBSTRATE
Library / MobileSubstrate
backup / delete Cydia REPO
your private / etc / apt / sources.list.d
and / or
var / lib / apt / lists
backup / delete your Cydia APPLICATIONS
private / var / stash / Applications.xxx
backup of application data files on the Apple Store
private / var / mobile / Applications / (whatever folder of your application) / Documents
files relating to the Customized Themes
private / var / stash / Themes.xxxxx
RINGTONES
files relating to private / var / stash / Ringtones.xxxxx
files relating to the System Sound (CLOSE, POWER, SMS)
System / Library / Audio / UISounds
related files TOPICS 'S OF SBSETTING
private / var / mobile / Library / SBSettings / Themes
videos made with Cycorder
var / mobile / Media / videos on your desktop and drag the video
izing with IPHONEVIDEORECORDER
var/mobile/Media/iphonevideorecorder3g.
screenshots that you took with the iphone vs
private/var/mobile/media/DCIM/999APPLE
files relating to dTUNES
/ var / mobile / Library / Downloads to the desktop and drag files
for videos downloaded through MXTUBE
var / mobile / Media / mxtube
desktop and drag files to the player on YOUTUBE
private / var / mobile / Library / YouTube
files relating to contact Save
/ var / mobile / Library / AdressBook
files on the timetable
/ var / mobile / Library / Calendar
files to notes
/ var / mobile / Library / Notes
files relating to the FAVORITE SAFARI
/ var / mobile / Library / Safari / Bookmarks
files relating to
MAIL / var / mobile / Library / Mail
files concerning the list of calls made / received / missed
/ var / mobile / Library / CallHistory
How to backup files on the SMS go
private / var / mobile / Library / SMS
save the file "sms.db" and put it back in the new firmware in the same place
MewSeek downloaded files with application of Cydia.
/ var / mobile / Media / MewSeek / Downloads
Alternatively, you can still back up your phone with itunes with jailbrekkato.
When you have saved data that you also advise you to save your ECID (not mandatory), otherwise you can never downgrade to firmware 3.1.2 or 3.1.3 if you have problems. To save the reference to ECID this page.
MAKE THE FIRMWARE UUPGRADE
1. Download the 4.0.2 firmware from this link
;
2. PwnageTool download the file that will be useful later (
link)
3. Now create the custom firmware 4.0.2 follow this guide
;
4. Once you create the custom firmware ipsw open the file with winrar (no extract) and overwrite the file that you downloaded with kernelcache.release.n88 (step 2).
5. Wait for the update winrar archive and close the file.
6. Open iTunes and click restore while holding down the shift key (Windows) or Option (Mac), will open a dialog box to select the firmware to load and choose the custom firmware created by PwnageTool first
7. Wait for the work of itunes.
8. After about 10-15 minutes you'll be a virgin iphone 3g with firmware 4.0.2 and jailbrekkato
If you have an iPhone probably will not have any foreign telephone signal and then proceed as follows:
1) Open Cydia
2) Go to Manage
bottom 3) Click on Edit then click on Sources in the upper right
4) Click Add on top left
5) Insert the source repo666.ultrasn0w.com (ultrasn0w of the 0 is a zero)
6) Wait for the update package and then click Done
7) click on the newly added repo and install Ultrasn0w
8) wait for the download and installation.
9) Once you restart your phone and you also have the phone line.
PROCEDURE TO REINSTATE YOUR DATA:
Connect the iPhone iTunes and restore the backup. If the method you used OpenSSH to copy the folder that you saved previously.
NOTE:
NOTE 1: I personally have had some problems when surfing the 3g because I copied the entire Library folder, I solved redoing the whole procedure and only entering in Library folders that interest me.
NOTE 2: After you have copied the folder AddressBook you may not see your contacts in the phone book: do not worry it's just a matter of permissions, in fact there are contacts, to see them proceed as follows:
1) Open WinSCP, navigate to the folder Contact your iPhone's private / var / mobile / Library / AddressBook and right click the two files that you see
2) Set all permissions to both read and written so all users (basically click all the checkboxes), you'll see the corresponding authorization code is 0777.
3) Now close and reopen the section of the iPhone WinSCP and find your contacts
