How to create your own custum ipsw without jailbreak [iPhone 3g 4.1]

[simoJB]

Hello boys....on internet i've seen that is possible create a personal ipsw first decrypting the files and than re-encrypting that.I've done the fisrt step but i am not able to re-encrypt the files in order to create my own ipsw.I don't want install cydia or else i want just enable multitasking.Can some one help me plis????? thx at all

[38115-2]

Forget about re-encrypting

after you enable multitasking

Package into *.dmg which gets compressed to .zip file

Rename extension to .ipsw

Run iReb and pwn the DFU

[simoJB]

I have those files:
0.ddm
1.free
2.apple_partiton_map
3.Apple_driver_ATAPI
4.free
5.hfsx
6.free
and now i compress those files into a zip????? and then change the esxtention from .zip to .ipsw?

[38115-2]

No. I'm talking about setting multitasking to true in N82AP.plist

If you don't know what I'm talking about, just jailbreak and do it.

[simoJB]

I want also to enable multitasking witout doing jailbreak on my idevice....i had oped the file .ipsw and i decrypted file .dmg (in which there are file system) , i modified file n82ap.plist and then what i must do?

[38115-2]

I want also to enable multitasking witout doing jailbreak on my idevice....i had oped the file .ipsw and i decrypted file .dmg (in which there are file system) , i modified file n82ap.plist and then what i must do?

That's what I'm trying to help you do.

Now package it to a .dmg again.

Zip it up and then rename extension.

[simoJB]

i've done but itunes give me error...i think 23 error i dont remember.Is the error about security of files ipsw

[38115-2]

i've done but itunes give me error...i think 23 error i dont remember.Is the error about security of files ipsw

Can't help you if I don't know what's wrong...

Did you try pwndDFU mode, or reg DFU mode?

[simoJB]

i've try your metod and itunes give me the error 14...my iphone was in DFU mode too