How to Restore &amp; Jailbreak &amp; Unlock iOS 4 by Sn0wbreez 1.6.2 and fix Spirit [ Full Guide ]

Update v1.6.2, bug fix for YouTube application and iBooks, add the verbose mode option in startup that was not present in the old version, fix to restore this custom iOS 4 from a iDevice jailbroken with Spirit and fix the error 2 encountered while restoring the custom.
Edit: Spirit2Pwn for iPhones 3G former iBoot.

Sn0wbreeze of iH8sn0w is available to customize a firmware jailbroken iOS 4.
Only for Windows users, for Mac users you have PwnageTool 4.0.1
Sn0wbreeze is only compatible 3G iPhones (former iBoot), iPhone 3G and iPod Touch 2G (Model not MC).

Sn0wbreeze is a tool for Windows iH8sn0w creator Ireb.
Like the software Pwnage Tool for Mac users, it will allow you to customize a firmware jailbreak your iPhone or iPod Touch.
Include Debs, define a root Cydia, preserve its baseband, to customize a boot logo, etc. ..

Compatible only iPhone 3G former iBoot, iPhone 3G and iPod Touch 2G (Model not MC)
Check the version iBoot.
Windows XP, Vista and Seven.
Net Framework 2.0 minimum.
Sn0wbreeze v1.6.2
ITunes 9.2
iOS 4

2 modes are available: Basic and Expert
The simple mode is a mode that lets you build your iOS 4 jailbroken quickly boot Logo iH8sn0w, automatic installation of Cydia.

Simple Mode

Please have the firmware file iOS 4. Ipsw
Firmware here.
Or show your hidden folders and go to C: \ Users \ "find \ AppData \ Roaming \ Apple Computer \ iTunes \ iPhone Software Updates.

Activation: it concerns people who are not the original SIM card operator to activate the iPhone after the restore.
Do not confuse unlocked.
An iPhone After restoration needs to be activated through iTunes to access the Springboard.
This option allows you to activate your iDevice.

Create custom firmware iOS 4
File. Ipsw you find on your desktop.

Expert Mode

Activate iPhone iTunes Activation of the iPhone without a SIM card, access to the springboard after restoration.
Root partition: the one installed applications from Cydia and download via its applications.
Enable Background, Multitasking, battery percentage: activate these functions of the four models iOS iPhone 3G and iPod Touch 2G.
Make-NOR * IPWS olny For users already jailbroken, only his ability to customize boot logo and recovery logo.

You can install Cydia and Rock.
Rock is an application installer as Cydia, fast enough, unless provided in applications.
I do not advise you to install the custom, cydia but if necessary after.

You can include in your custom firmware applications Cydia (deb file)
But beware, many applications currently seem unstable in Cydia iOS 4.
Function to add URL repo.
Downdload Packages: click on Refresh to view the debs packages.
Function to import an application Cydia (file debs) from your PC.

Function to add your own boot logo and recovery logo
Function to add the verbose mode at startup of the device (unix command line that appears at startup, you see what happens instead of having the apple display.)
Note the size and image compression.

It will include Ultrasn0w 0.9.3 for unlocked after you restore your custom firmware.
Or add url repo: http://repo666.ultrasn0w.com and import the package into your Ultrasn0w 0.9.3 Custom firmware.

Create custom firmware iOS 4
File. Ipsw that you find on desktop

Installing this custom firmware

- The better condition, be already jailbroken 3.1.3 or 3.1.2 as

- Since version 1.6.2, a user already jailbroken with Spirit, can restore a custom made with iOS 4 sn0wbreeze.

- IPhone 3G and iPod Touch 2G, use Ireb + iTunes.

- IPhone 3G, change the host files: see Saurik method.

iPhone 3G former iBoot Spirit

IPhone 3G Users former iBoot already jailbroken with Spirit, it is possible that despite this update Sn0wbreeze, restoration of custom iOS 4 creates still does not install.

So before you restore your custom, go to Cydia.
Add this repo: http://repo.woowiz.net
Then install the package Spirit2Pwn (from Criminal90)
Reboot and install your custom with iTunes.

Restoration

Turn iDevice. button (above) + Home button (bottom)
Then simultaneously press the ON button (above) + Home button (bottom)
Keep pressed until the USB cable appears on the screen of your device (Fashion Recovry)
Launch iTunes 9.2
Click SHIFT + RESTORE (ALT MAC)
An explorer window opens to indicate the firmware. Ipsw created.
The restoration begins.

If this does not work, try this:

Connected to iDevice to your computer.
Turn iDevice
Switching to DFU
Power ON 3sec
ON + Button Home Button 10 sec
Home Button only 20 seconds (let go button ON)
The screen is black (DFU mode)
Launch iTunes 9.2
ITunes detects a device into Restore .SHIFT + Restore
Give him the file. Ipsw created with Sn0wbreeze.

When the restoration of the custom is over, finish installing Cydia (Internet access over 3G or wifi required)

Then install 0.9.3 Cydia Ultrasn0w if need to Unlock your iPhone.

If error 1015.16 try our posted here to fix it

NB: I advise you if you can avoid creating a custom firmware enabled single mode or expert!
This is potentially better spent when restoring with iTunes and especially avoid any concern 3G and WiFi.