Please correct me if this is wrong
So, my 3GS is MC134ZA week 48 of production (Checked from my serial number) will not be jailbroken with current Blackra1n RC3 eventhough i try the custom firmware 3.1.2 because of the iBoot itself already made it unjailbreakable (Untethered jailbreak).
Re: Please correct me if this is wrong
The term iBoot is used in two places
Originally Posted by JBoen
1. The securerom / bootrom, this is hardware that can't be changed by a reflash. Occasionally apple will introduce a new bootrom in the manufacturing phase. This is what happened with iBoot-359.3.2
2. The recovery mode uses another iBoot (with a higher version number) this can be reflashed and is usually updated with each new iPhone OS
Current jailbreaks require exploits in both bootrom and recovery mode iboot for an untethered jailbreak.