Hello, I have an iPhone 3G with iPhone OS 4.2.1, I have the serial cable (built) to use it with SerialKDPProxy, but the only problem I have is to set the boot-args "-v debug = 0x9 ".
I tried it with redsn0w executable and from the terminal, but I've understand that the iPhone 3G does not have the exploit limera1n and therefore it can not boot tethered.
I tried by putting it in recovery mode and using the utility called iRecovery (for windows), to set them and then use greenpois0n, but no luck.
Now the only alternative that remains is to set them by creating a custom kernel. So I decrypted the kernelcache and opened it with IDA Pro. Now I do not know what to do.
Please can you tell me how I should do, what should I edit and how to save the file patched? Or is there another alternative? Thanks