Guide to Jailbreak iPhone 2g 3G 3GS OS 3.1.2 with Redsn0w 0.9

22 January 2010 by Vinay 14 Comments

Redsn0w is an easy to use, multi-platform, multi-device jailbreaking and unlocking tool for the iPhone 2G 3G 3GS and also the iPod touch (first and second generation). Just like Blackra1n, Redsn0w jailbreak the 3.1.2 firmware already installed on your device, so before you proceed, you must have installed the original 3.1.2. Note that late-model iPhone 3GS and iPod touch 2G whose serial number begins with “MC” are currently restricted to “tethered” rebooting. That means you need to connect your device to a computer to complete the boot after a reset. Also, these devices cannot have custom logos.

Download Redsn0w 0.9 Beta 3

Windows Version
Mac Version

Step 1. If you have not already, download the original firmware 3.1.2 on the desktop of your computer. In case of unlocking an iPhone EDGE, to be sure you also download the two files Bootloader: bl39.bin and bl46.bin

Step 2. Connect the iPhone / iPod to PC or Mac

Step 3. Launch the application and click on Browse. Select the original firmware 3.1.2 from the desktop of your computer and then click on Next

Step 4. It will start an automatic process (and very fast) which will be downloaded and patched the kernel.

Following a new screen will appear. Cydia is already selected.

Install Cydia: Main reason why we jailbreak iPhone.
Verbose Boot: Will allow you to replace the boot with the apple (boot chart) with the verbose mode, or the ability to see everything that is loaded at startup;
Custom Boot Logo: Bore with classic apple startup, change with your face or whatever else. Size should be 320X480.
Recovery Custom Logo: A logo that will replace the classic Recovery;
Already Pwned: Select if you want to install the verbose boot or change the boot and recovery logos on an iPhone on which has already been to jailbreak;

Step 5. Now you will be asked to put the iPhone in Recovery Mode (iPhone 3GS) or DFU (the other iPhone / iPod).

How to put your iPhone in recovery mode :

Turn the device completely off and disconnect it from cable/dock.
Hold down the home button.
While holding down the home button connect to a computer with a cable (easiest) or dock.
Keep holding down the home button until you see a connect-to-iTunes screen You are now in recovery mode.

To escape Recovery Mode and power the phone off simply hold down power and home buttons for ten seconds.

How to put your iPhone in DFU mode :

Connect your iPhone to your computer.
Turn iPhone off.
Hold power and home together for 10 seconds (exactly).
Release power but keep holding home until the computers beeps (observed on a PC) as a USB device is recognized.
A few seconds later iTunes should detect your iPhone.
If the Restore Logo is present on the screen, you are in Recovery Mode, not DFU.

Step 6. Once you are in recovery mode/dfu mode redsn0w will start another automated process to complete the Jailbreak.

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14 Comments »

RALF said:

“unable to recognize specified IPSW”
appears when choosing the original firmware 3.1.2 file

any ideas about that?

and i have a question…

i’m jailbreaking my iphone 3g international for the first time

what would i loose if i did this, i mean what are the disadvantages for jailbreaking iphone?

thanx all

# 23 January 2010 at 4:31 am

DDub420 said:

Ive been having trouble with snowbreeze trying to get the custom firmware loaded onto my buddy iphone 3g. So im going to give redsnow 0.9 a try. ireb isnt needed is it?

# 23 January 2010 at 10:00 am

jennifer said:

HELP! i followed all the steps but once it’s done it just shows up as a black screen, what do i do?

# 23 January 2010 at 10:23 am

Mohamed El Moatassem said:

This work with the new iBoot ?

# 23 January 2010 at 6:29 pm

Pigeon said:

I get the same black screen and redsnow doesn’t seem to be able to push the iPhone into restarting during the process. Not sure whats up with it maybe it because im on win7 x64 but seen confirmation of JB on other x64 systems.

I’m going to wait for the final release.

# 25 January 2010 at 1:58 am

Pigeon said:

I managed to get around the black screen problem on win7 x64 with my 3GS (MC week 28), dunno what i did it but it worked after i did this:

+ JB with blackra1n
+ run redsnOw with already pwned & verbose mode getting the hard drive icon on the iphone. It resets correctly.
+ reflashed the firmware with itunes to 3.1.2
+ run redsn0w with install cydia and custom logo. I get the hard drive icon again and reset to a JB phone & sweet custom logo.

Hope this helps anyone who may have this problem.

Pigeon xx

# 26 January 2010 at 12:32 am

luke said:

After I done it its showing a black screen then apple logo, there is not cydia instaled. sth is wrong

# 26 January 2010 at 1:48 am

adam said:

need help… when trying to use redsnow the screen stays black after the process starts it never shows the pic of the hard drive wit the green arrow, am i doing something wrong? im using a 3gs n its the older one

# 26 January 2010 at 4:44 am

Rammy said:

Awesome!!!
Simple and Easy.Thanks Guys for your wonderful work.

# 27 January 2010 at 11:33 am

Caveh said:

i have a 2G on 3.0.1, will this work on it? will this also activate the iphone? or is there any big difference between 3.0.1 & 3.1.2 which will worth going for all this & installing all the apps all over again? an answer would be appreciated! thx

# 28 January 2010 at 8:32 pm

loyal said:

hi, everyone, i j/b my 3gs 3.1.2 new bootroom with redsnow 0.9.3 and then unlocked with blacksnow, everything seemed to work fine but mms issue. after inserted all the settings for mms for tmobile(must reboot to have it effected), i rebooted the phone, i got mms but no wifi (the wifi can’t detect the wireless networks around). i looked all over the net but no hope, then i found a guide to fix the wifi by resetting the network, after resetting the network(again, must do the reboot to get this to work), the phone rebooted again and wifi is back but mms is gone because all the settings for the mms is clear from the resetting. this really pissed me off, it’s like you can ONLY get one of the two because after each reboot one of them will be lost. i think the problem is somehow the wifi and mms just can’t get along on the 3gs with new bootrom. i give up now, please help me out..thanks alot

# 10 February 2010 at 1:43 am

jimD said:

Anybody know what kind of battery charge life the 2G phones get on the later upgrades – 3.1.2, 3.1.3?

# 11 February 2010 at 9:19 pm

PRAVEEN JAIN said:

respected sir first i wann to ask u that i have iphone 2g can i upgrade my iphone with version in 3.1.3?
sir can u tell me i m using windos xp 2 in that i can download verison 3.1.3 or i wnn to upgarde my window and tell me which wndow i wann
sir i cannt download redsnow from ur side can this possible to mail me that fill on praveen_online123@yahoo.com
please give me reply i m waiting thanks

# 14 May 2010 at 8:46 am

L J K said:

I followed the instructions exactly with my iphone 2g, but it will not recognize any sim card, i tried it both with my at&t card and my tmobile activated one i have. Help?!

# 7 September 2010 at 9:25 am