Guide - How to update firmware custom ios4 for 3gs old boot from firmware 3.13
 

You have:

1. Iphone have old boot - How to check bootrom:):)
2. Iphone have save shsh 3.13
3. Have sim active provider
4. Itunes 9.2
5. Firmware custome 4.0

Step:
1. restore 3.13
2. Active iphone by itunes and jailbreak iphone by spirit
3. Install openshh, afc3add and mobileterminal from cydia
4. Download two file and extract it
5. Connect iphone by winscp.
Go folder "tmp" in root
- copy all file in folder all_flash.n88ap.production to tmp folder and set permission is 644
- Copy all file in folder spirit2pwn_r1 to tmp folder and set permission is 755
6. Run MobileTerminal in iphone
* su (enter)
* alpine (enter)
* cd /tmp (enter)
* ./pwn_old_boot_r1.sh (enter)
Waitting to complete :D
7. Restart iphone then restore iphone with firmware custom ios4 by recover mode


I try test and everthing ok :)

more
Thanks Dtube

what is the use of all this ..
if we have 3.1.3 shsh saved and can restore full at 3.1.3..
and for old boot there is jailbread avilabel in some usefull tools...

There is a MORE easy and faster way POSTEd on this forum !!

Urs is tough !