Need Help Understanding A Dev-Team Blog Instruction

[davemsu]

I don't understand this instruction from the Dev-Team: "If you have an old-bootrom 3GS and are already unlockable but want to get to 4.2.1, please wait til we release an “unofficial” bundle for you. Read no further."

I want to upgrade, jailbreak, and unlock a 3GS to the latest 4.2.1. It is currently running 3.1.3 and firmware 05.12.01. Is this an "old bootrom," or will I be OK to run the latest jailbreak and unlock?

Thank you very much for your time!

[RiotNrrrd]

Boot ROM level != firmware level. Google around, if you have a Mac you need to connect the 3Gs in DFU mode and open System Profiler to find out the Boot ROM version, if I recall correctly. (Dunno how to do it on Windows.)

[Simon]

On windows download idetector to find out.

[davemsu]

Ok...I downloaded idetector and the phone does have the "old bootrom." So I assume that I should wait for "unofficial bundle?"

Thanks again!

[Simon]

They released a bundle in update 3 on their blog I believe. You drop that into pwnage tool, then you can make a custom 4.2.1 without baseband in it.

[davemsu]

I took a look at that, but it mentions Mac users only. I'm on Win7, so I'm not sure if that applies to me.

[Simon]

pwnage tool is mac only yes. If you want a 4.2.1 custom just PM me

[whookids]

if you want ipsw 4.2.1 on your 3gs you'd better hold back a little bit
this version uses a baseband check and even if you update with a custom ipsw you will still have problems..
i have a 3gs old bootrom, ios 4.1, bb 6.15 as required for unlock and i think it was the biggest mistake of my life...
I HAVE NO SIGNAL IF THERE IS NO 3G COVERAGE...
i will take it to an orange shop and officially unlock if possible...fingers crossed