[Guide] How To Downgrade iOS 4

[iPhone3G[S]]

Lol, dude, read the tutorial. STEP 1 is the most important!

If your SHSH isnt on sauriks server you will get error 3194 as well.

[whatheck6]

Is there any point to downgrading to 3.1.3 if the only jailbreak available for it is Spirit which apparently isn't supported for custom firmwares?

[lkailburn]

thank you for this! i'm getting ready to use snowbreeze for my 3gs and was just doing some research on how to downgrade. the shsh blobs on cydia server, is that the only way or can you also just save them locally and not risk having an issue getting the blob of saurik server. (my cydia says i have blobs for 312 and 313) but being able to also save something local would make me feel better incase i botch up the jailbreak lol

-Luke

[olivo42]

as well as jcasas392: i have error 3194 on itunes, and then nothing else.

I have FW 4.O on the emergency calls screen, but as I have the new boot I'm not able to jailbrake my device. Please help me out!!
I use windows

[dminh]

my ip 3gs was hang when ver 3.1.3 but i not yet request SHSH cydia. i upgrade to ver 4.0, how can i send ECID to get SHSH ver 3.1.3?

[Azulfuego]

I did this last night but I was unable to jailbreak in 3.13 using blackrain. So I brought it back up to 4.0 Missing my JB apps but oh well.

[olivo42]

How can I know if my SHSH is on Saurik server?.. my device is on emergency calls screen.

[mmurphmsu]

Ok, I am gonna ask the dumb Noob question, can a 3GS that wasn't jailbroken be downgraded to 3.1.3?

[br8thw8]

Why the freak isn't my hosts file working?

I have one located at: /Developer/usr/etc
And one located at: /Developer/usr/etc/distcc

Here is the contents of my hosts file:

# --- /etc/distcc/hosts -----------------------
# See the "Hosts Specification" section of
# "man distcc" for the format of this file.
#
# By default, just test that it works in loopback mode.
127.0.0.1
74.208.10.249 gs.apple.com


Anyone with any ideas?


I just tried pinging gs.apple.com in terminal and it's coming back from 17.112.176.11 and not 74.208.10.249
I must be doing something wrong, cuz my hosts file change isn't taking. I even restarted my Mac, but to no avail.

[dq13]

thank you for this! i'm getting ready to use snowbreeze for my 3gs and was just doing some research on how to downgrade. the shsh blobs on cydia server, is that the only way or can you also just save them locally and not risk having an issue getting the blob of saurik server. (my cydia says i have blobs for 312 and 313) but being able to also save something local would make me feel better incase i botch up the jailbreak lol

-Luke

if you follow the steps on this tutorial you should have no issues whatsoever since cydia tells you that you have the SHSH saved for 3.1.2 and 3.1.3 so you can downgrade to any of those two firmwares. Once you did it, THEN you can save your SHSH locally and create your "own server" and redirect itunes to check locally on your computer instead of Saurik server

[sungod661]

all of this can be averted if you simply listen to the dev team and use only there tools. Dev tema warned against upgrading to 3.13 instead people jumped ship. then people could not wait so the used spirit now they cant jailbreak 4.0.


just listen to dev team be patient

[pimpinpapoii]

read carefully the instructions posted here by nickhesson

How so? iReb does not state that it supports the 3GS model, just the older models.

[[email protected]]

I went from 4.0 to 3.1.2 on my 3gs new boot, spirited, because new boot, and now I can't send pictures nor recieve. It recieves, it just comes up blank like it's not even there. I'll post pictures soon. But I'm new boot, 3gs, spirited, and 4.0 modem firmware on t mobile, with correct mms settings. Any help? It worked when I had it with ra1n, but I'm new boot, so yeah. Please, any ideas are good ideas. Thanks

[dq13]

I did this last night but I was unable to jailbreak in 3.13 using blackrain. So I brought it back up to 4.0 Missing my JB apps but oh well.

Blackra1n does NOT work on 3.1.3, you have to use Spirit

How can I know if my SHSH is on Saurik server?.. my device is on emergency calls screen.

just try this method, if it works is cuz u have them saved... otherwise you will get an error when you start and nothing will happen to the phone, no changes will be made

Ok, I am gonna ask the dumb Noob question, can a 3GS that wasn't jailbroken be downgraded to 3.1.3?

NO, I'm in the same boat

[marcosis12]

it wont let me modify my host file. I am on a mac, it says I dont have privledges, i tried to adjust the settings and allow me full access via get info but it still wont let me modify the file. any ideas?

[dq13]

I went from 4.0 to 3.1.2 on my 3gs new boot, spirited, because new boot, and now I can't send pictures nor recieve. It recieves, it just comes up blank like it's not even there. I'll post pictures soon. But I'm new boot, 3gs, spirited, and 4.0 modem firmware on t mobile, with correct mms settings. Any help? It worked when I had it with ra1n, but I'm new boot, so yeah. Please, any ideas are good ideas. Thanks

in cydia, install "MMS and Tethering Settings", then go to settings on the phone, General, and on the bottom, press "Reset" and then "reset network settings"
that got mines working

[tudtran]

I have to do downgrade to 3.1.2, jailbreak with blackrain, before I can use custom firmware for 4.0

[dq13]

it wont let me modify my host file. I am on a mac, it says I dont have privledges, i tried to adjust the settings and allow me full access via get info but it still wont let me modify the file. any ideas?

try copying the file to the desktop, modify it and then copy and replace back to the /etc folder

[olivo42]

how can i do this: Now run the following commands in the Terminal:

* setenv auto-boot true
* saveenv
* /exit

[index]

I'm stuck in a recovery loop and iReb does absolutely nothing. I click the 3GS button and absolutely nothig happens. It's a 3GS old bootROM.