How to Capture Your iPhone 3GS iBEC and iBSS on Mac

radack1155 · 07-02-2009, 01:12 AM

http://www.modmyi.com/forums/iphone-...-ibss-mac.html

I guess these files are sort of like the purplera1n file. I'd make sure you do just in case if you want to JB your 3GS.

carrera.owner · 07-02-2009, 07:00 AM

I posted a terminal-based approach I found at the dev-team blog on the following thread: http://www.everythingicafe.com/forum...eam-50576.html

cliffeman · 07-02-2009, 10:37 AM

Here's a guide for windows users.

http://www.iclarified.com/entry/comm...commentsanchor

FYI, instead of doing a restore and DFU mode to capture the two files. Just go into DFU mode to copy both files at once.

Europa · 07-02-2009, 10:41 AM

Is this necessary if you already have the purplera1n file, or is it just an alternative way of ensuring future jailbreakability?

cliffeman · 07-02-2009, 10:45 AM

Many people are asking that question. But no one seems to be giving a definite answer. I just did it anyway.

radack1155 · 07-02-2009, 11:22 AM

Originally Posted by Europa

Is this necessary if you already have the purplera1n file, or is it just an alternative way of ensuring future jailbreakability?

People are saying to do both just in case.

shutter13 · 07-02-2009, 11:30 AM

Originally Posted by Europa

Is this necessary if you already have the purplera1n file, or is it just an alternative way of ensuring future jailbreakability?

From the dev-team blog

Originally Posted by Dev-Team.org

Remember we warned you to stay away from any updates to 3.1 if you want to be able to jailbreak or unlock your 3GS.
Well this is an additional message to all you 3GS owners that would like to jailbreak your device sometime soon, but this advice comes with a warning! A warning that if you accidentally upgrade to 3.1, you will not be able to use Ultransn0w, so please re-read and double check this warning at the bottom of this post before proceeding.
You may have read or heard about techniques to capture files during the iTunes restore process. These will be required to jailbreak your phone in the near future, most of the methods involve icky USB snoops. Well, there is an even better and more reliable method to get your hands on those lovely files.
During the restore process iTunes nicely keeps these oh-so-top-secret-files in a lovely accessible place for us to copy out and backup, that place? /tmp on Mac OS X or %TEMP% on Windows. Thanks Apple — handy!
The downside to this approach is that you actually need to go through the restore process to get these signed files, which has risks if you are anywhere near 3.1 or 3.1 beta :-)
If you are ready to proceed and you know the risks we’ll get down to the nitty-gritty -
So during a usual recovery with iTunes, your signed iBEC is written to /tmp and during a DFU mode restore the signed iBSS is written there also. To be sure, restore in both modes one after another to be able to grab them both. You’ll need to keep an eye on the temp directory and copy it before it is deleted again by iTunes. I’m sure some nice folks will create a tutorial about this, we’ll link to the first person who makes a good one.
Should you choose to accept this mission, act fast, this needs to be done quickly! But again, always, always double check here to see if 3.1 has been released, if is has, then don’t do this.
WARNING!! - DANGER, WILL ROBINSON! - NB! - REMEMBER!
IF YOU CARE ABOUT ULTRASN0W, BE VERY CAREFUL WITH THIS METHOD! Do not attempt this if you have downloaded the 3.1 beta. You do NOT WANT TO accidentally restore your device to 3.1 beta — you’ll lose ultrasn0w if you do! BE WARNED :-)
Update: iClarified has come up with a good picture-filled guide for doing this on a Mac and also one for Windows. Good luck!

Europa · 07-02-2009, 11:40 AM

I already read that, but I don't see anywhere where it says definitively that the purplera1n file won't work. Just this,

Well, there is an even better and more reliable method to get your hands on those lovely files

And I'm not sure what they mean by better and more reliable anyway, it's ambiguous. It could mean a safer way to get the files but it could also mean a higher likelihood that the JB will work.

shutter13 · 07-02-2009, 11:49 AM

If I hadn't already done the 3.1 update I would do it...just to be safe. In one blog entry, they say we are in great shape cause we got our "img3’s signed with your ECID" which is what I am assuming the purplera1n file does. In a later post they say these other files are necessary to jailbreak the 3GS.

Get_Zwole · 07-02-2009, 01:34 PM

i did it to be sure. wasnt gonna take a chance.