Help!!!
Stuck... I've done every step right up to Step 8 where I'm suppose to use Java to run the 1.1.2 Jailbreak. FYI, I'm using Windows XP, when I clicked the "windows.bat" file, a screen opens and imediately close.

How should I overcome this step?

+1 for the above.. the iWorld simply works.

Anyway, just one question..

can i delete the applications that I have already used.. such as the anySIM and the iWorld? It's filling up my springboard.

Yes you can delete those apps once you're done patching it. I've deleted it and it still works like a charm.

My phone is now 1.1.2 and working perfectly. Calls and SMS in and out without problem so far, thanks to iWorld.

My phone is a 1.1.1; downgraded to 1.0.2 jailbroken and unlocked to 1.0.2 by local seller over here. Personally upgrade back to 1.1.1 jailbreak and unlock a few days ago.

The weird thing is, in the process of unlocking using anySIM 1.21u, the program indicate that it CANNOT unlock my phone and ask me to shut down. I was furstrated so I wend on with the final 1.1.2 jailbreaking and guess what, it's jailbroken AND unlocked. Anybody encounter this before?

Thanks soonwai for your guide.

The shorter method detailed above, which bypasses the v1.0.2 portion of the downgrade, does shorten the process significantly and works like a charm. I am now enjoying a fully unlock'd and fully functional v1.1.2 iPhone. Everything works.

Looks like oktoprep is down for this few days. so can't unlocked 1.1.2 firmware.

Looks like oktoprep is down for this few days. so can't unlocked 1.1.2 firmware.

Looks like oktoprep is down for this few days. so can't unlocked 1.1.2 firmware.

How to update iPhone 1.1.1 to 1.1.2 Unlocked (8 simple steps for Mac & PC)

Notes & Warnings
-I don't know why but almost all the other guides I've seen on the net have you restoring all the way down to 1.0.2. That's unnecessary.
-Though I haven't tried it, the same procedure will also work for 1.0.2 phones. You may need to revirginise first.
-Look here for 1.0.2 revirginizing.
-This will not work on OOTB iPhones with the new 4.6 bootloader. (OOTB at the moment are 1.1.2s. Rumour has it that some new 1.1.1s are coming with the new bootloader too.)
-Don't be afraid to try. Even if you missed a step, you'll just have to start over. There's almost no chance of bricking the iPhone.
-Having said that, here are 3 warnings:
- 1. Do this at your own risk.
- 2. For those still on 1.0.2. If your iPhone has been unlocked previously with AnySIM 1.0, it must be virginised first.
- 3. Do not run AnySIM 1.2.1u in 1.1.2.

Requirements
My starting point was a virginised, activated, jailbroken, unlocked 1.1.1 iPhone. (which most of us have)
You'll also need a WiFi connection for the iPhone.

Software required (Mac)
- iTunes 7.4.2 (for iPhone Restore & Update)
- iNdependence 1.2.5 (PC users will need iPhuc or iBrckr instead of iNdependence, they are only used to kick the iPhone out of DFU mode)
- If you're using iTunes 7.5, you'll need iNdependence_v1.3_beta2 & MobileDevice_7_4_2.framework.zip
Download iNdependence_v1.3_beta2.zip
Download MobileDevice_7_4_2.framework.zip
- FuGu (Mac sftp, scp client for copying files to the iPhone) Download Fugu-1.2.0-English.rar
- WinSCP for Windows

Files Required (links to come)
- Apple iPhone Firmware 1.1.1
iPhone1_1_1.1.1_3A109a_Restore.part1.rar
iPhone1_1_1.1.1_3A109a_Restore.part2.rar
- Apple iPhone Firmware 1.1.2
iPhone1_1_1.1.2_3B48b_Restore.part1.rar
iPhone1_1_1.1.2_3B48b_Restore.part2.rar
- AnySIM 1.2.1u (for unlocking) Download anySIM1.2.1u-independence125
- 1.1.2 Jailbreak Download 1.1.2-jailbreak-UPDATED.zip
- BSDSubsystem, OpenSSH & Oktoprep via Installer
- pntedit Download pntedit_build_3.zip

Steps *Please note distinction between Restore & Update.
1. Restore* to 1.1.2 using iTunes
Put your iPhone into recovery mode. (Hold Power & Home buttons. When screen goes black, release Power only. While still holding Home, plug in the cable.)
Click Restore.
This will give us 1.1.2 and baseband 04.02.13_G

2. Restore* down to 1.1.1 using iTunes
Put your iPhone into recovery mode (see above) & connect to computer, option-click Restore
Select the iPhone 1.1.1 ipsw file.
It will end with a 1015 error. That's OK.
Quit itunes and open iNdependence. iNdependence will kick the iPhone out of recovery mode.
PC users, use iBrickr
or iPhuc and issue the following commands:
cmd setenv auto-boot true
cmd saveenv
cmd fsboot
This will give us 1.1.1 and retain baseband 04.02.13_G

3. Activate & Jailbreak 1.1.1 using jailbreakme.com
Instructions from http://jailbreakme.com/safari.html
- On the Activation Screen, slide "slide for emergency" to get to the dialer pad.
- Call *#307# & the phone will ring
- Delete *#307#, type in 0 and hit Call again.
- Press Answer, Hold & Decline.
- Go to Contacts and create a new contact. Create 2 urls:
Code:
prefs://1f
http://jailbreakme.com
- Select your WiFi network by prefs://1f.
- Press home and call number 0.
- Answer, Hold & Decline.
- Go to the contact again and touch http://jailbreakme.com
- Install AppSnapp
- This will take a while, be patient & wait till the phone rings. Wait again and the phone should reboot by itself.

This will also install Installer for you.

4. Alternate (replaces steps 4 & 5 below) Unlock 1.1.1 using AnySIM 1.2.1u Thanks to mliberatore.
Add this source to installer: http://rep.frenchiphone.com
Install AnySIM 1.2.1u via Installer. It's in FrenchIphone.com
Set Auto-Lock to Never.
Run AnySIM to unlock the iPhone.
Jump to Step 6

4. Install BSDSubsystem & OpenSSH
Use Installer to install the above 2.

5. Unlock 1.1.1 using AnySIM 1.2.1u
Set Auto-Lock to Never.
Use FuGu or WinSCP to copy AnySIM 1.2.1u to /Applications on the iPhone.
Run AnySIM to unlock the iPhone.

6. Install & run Oktoprep on 1.1.1
Use Installer to install Oktoprep and then run it. It's in Tweaks (1.1.1)

7. Update* to 1.1.2 using iTunes
Connect iPhone to iTunes and do an update. (NOT RESTORE)
This will give us 1.1.2 and baseband 04.02.13_G.
Phone will still be unlocked but it's jailed & not activated.

8. Activate & Jailbreak using 1.1.2 Jailbreak (the .JAR file)
PC users will need Java Runtime.
Run the 1.1.2 Jailbreak on your Mac/PC
On completion it'll reboot twice.
This will give us activated, jailbroken, unlocked 1.1.2 with baseband 04.02.13_G. (ie the latest & the greatest)

9. Fix dialer/SMS crash with pntedit for AppSupport
Basically you'll need to patch AppSupport with pntedit with the following values:
my 60 00 0 1 7
my 60 00 0 1 8
my 60 00 0 2 7

or

Download my patched AppSupport. http://rapidshare.com/files/71092650/AppSupport.my.zip

or

Use Installer.app to install iWorld. It's in Tweaks (1.1.2) It fixes the crashes and uses French rules for callerid matching. (untested by myself)

This will fix the iPhone crashing when you try to dial using the keypad.
Calling from an Address Book entry is OK.

DONE