Downgrade done for 3Gs on 4.0.2 To 4.0.1

[partapmobile]

Here is procedure......

Navigate to C:\Windows\System32\drivers\etc\ and locate “hosts” file.
Open this “hosts” file in Notepad and add this line in the end

74.208.105.171 gs.apple.com

And then i open my itune using 9.2.1, Select shift+restore and phone starting downgrade.......wow

[rikkter]

This only works if you saved your SHSH.

[partapmobile]

I never save my shsh b4. By mistake this phone i restore to 4.0.2, and then i start looking the solution but no chance to dwngrd......after lots of searches here i found something abt TinyUmbrella........here is my TinyUmbrella log....
08/23/2010 00:03:23.890 The Real Firmware Umbrella - v4.02.04 by semaphore
08/23/2010 00:03:23.890 For help click here
08/23/2010 00:03:23.906 Connect a device to continue...
08/23/2010 00:03:24.500 NOT running as administrator OR your hosts file is not
editable - Cannot listen on port 80! TSS Server will not work!
08/23/2010 00:03:24.531 Caching shsh files...
08/23/2010 00:03:24.546 Found [2] shsh files to cache...
08/23/2010 00:03:25.093 Cached [2] shsh files
08/23/2010 00:03:32.671 You are using the current version of TinyUmbrella.
08/23/2010 00:03:33.578 Device Detected -
Device: iPhone3GS 4.0.2 (8A400)
Model: MB715LL/A
Name: AMAN
UUID: 76BEF98FFFF9C06DCBDDDFDD418E4EE72A9DCD35
Baseband: 05.13.04 - 6.4_M3S2
08/23/2010 00:22:03.546 Device disconnected:76bef98ffff9c06dcbdddfdd418e4ee72a9dc d35
08/23/2010 00:22:10.031 Recovery Device Detected - iDevice:80945SEY3NP
08/23/2010 00:22:11.281 Recovery Device disconnected.
08/23/2010 00:22:19.625 Recovery Device Detected - iDevice:80945SEY3NP
08/23/2010 00:22:26.484 Recovery Device disconnected.
08/23/2010 00:29:47.687 Device Detected -
Device: iPhone3GS 4.0.1 (8A306)
Model: MB715LL/A
Name: iPhone
UUID: 76BEF98FFFF9C06DCBDDDFDD418E4EE72A9DCD35
Baseband: 05.13.04 - 6.4_M3S2
08/23/2010 00:31:54.968 Device disconnected:76bef98ffff9c06dcbdddfdd418e4ee72a9dc d35
08/23/2010 00:32:16.953 Device Detected -
Device: iPhone3GS 4.0.1 (8A306)
Model: MB715LL/A Name: iPhone
UUID: 76BEF98FFFF9C06DCBDDDFDD418E4EE72A9DCD35
Baseband: 05.13.04 - 6.4_M3S2
08/23/2010 00:42:37.953 Device disconnected:76bef98ffff9c06dcbdddfdd418e4ee72a9dc d35

After this i pass thru HOSTS file procedure and got everything done

[mike67]

@Partapmobile

Please next time dont deny regarding saving the shsh files here is proof from from tiny umbrella log

08/23/2010 00:03:24.546 Found [2] shsh files to cache

this procedure only works for shsh files saved on cydia

thanks
mike

[dumuc]

Originally Posted by partapmobile

Here is procedure......

Navigate to C:\Windows\System32\drivers\etc\ and locate “hosts” file.
Open this “hosts” file in Notepad and add this line in the end

74.208.105.171 gs.apple.com

And then i open my itune using 9.2.1, Select shift+restore and phone starting downgrade.......wow

Got error 1601

[rikkter]

Originally Posted by dumuc

Got error 1601

I actually did something similiar to this thread and another i saw and it's currently restoring. but since it worked it's making me think i selected the wrong ipsw file. will let you know in a few.

[rikkter]

Hah it worked! im'a type up what i did exactly and post

[whitebeard]

Great if this procedure work's, but can you show some screenshot of your iphone for proof..?

[rikkter]

I dont have a before and after of the phone screen, but it definitely works.

here's what i did.

Followed steps from these threads:
http://forum.gsmhosting.com/vbb/f456...-02-a-1078191/
http://forum.gsmhosting.com/vbb/f456...0-1-a-1078190/
So thanks to partapmobile, and MPhoneClinic.
1 - I downloaded TinyUmbrella (google it, you'll find a link)
2- Run TinyUmbrella. Click Advanced Option. Select 3Gs 4.01. Select Cydia. Save SHSH.
3 - Same steps as above but Select 3Gs 4.0.2 (cant be too safe)
4 - Edited Local host to say following: 74.208.105.171 gs.apple.com
5 - Rebooted iPhone into Recovery Mode, chose 4.0.1 IPSW
And voila, it worked.
I know i'm probably not creditable because this is my 4th post, but I had a 3Gs with no SHSH saved ever. Followed these steps and officially downgraded to 4.0.1.

[dumuc]

8/22/2010 20:33:03.703 Asking CYDIA for SHSH blobs for iPhone3GS 4.0.1 (8A306)... 08/22/2010 20:33:15.109 SHSH SUCCESSFULLY saved! [Click Here to Open]
08/22/2010 20:33:15.125 You have saved your SHSH locally and the request was sent to CYDIA. This means that CYDIA DOES have your SHSH. Do NOT bug semaphore about the Cydia home page showing this version. 08/22/2010 20:33:15.140 Caching shsh files... 08/22/2010 20:33:15.156 Found [1] shsh files to cache... 08/22/2010 20:33:15.218 Cached [1] shsh files 08/22/2010 20:33:19.625 Starting TSS service on port 80 08/22/2010 20:33:19.625 TSS Accepting connections... 08/22/2010 20:33:19.640 TSS Server Started!

for how long it will finish..???

[rikkter]

Did you shift+click restore in itunes and chose the 4.0.1 ipsw?

[whitebeard]

Originally Posted by rikkter

I dont have a before and after of the phone screen, but it definitely works.

here's what i did.

Followed steps from these threads:
http://forum.gsmhosting.com/vbb/f456...-02-a-1078191/
http://forum.gsmhosting.com/vbb/f456...0-1-a-1078190/
So thanks to partapmobile, and MPhoneClinic.
1 - I downloaded TinyUmbrella (google it, you'll find a link)
2- Run TinyUmbrella. Click Advanced Option. Select 3Gs 4.01. Select Cydia. Save SHSH.
3 - Same steps as above but Select 3Gs 4.0.2 (cant be too safe)
4 - Edited Local host to say following: 74.208.105.171 gs.apple.com
5 - Rebooted iPhone into Recovery Mode, chose 4.0.1 IPSW
And voila, it worked.
I know i'm probably not creditable because this is my 4th post, but I had a 3Gs with no SHSH saved ever. Followed these steps and officially downgraded to 4.0.1.

There's no possibility to crushed your iphone using this guide..?

how about if you encountered an error using tinyumbrella..?

[dumuc]

Originally Posted by rikkter

Did you shift+click restore in itunes and chose the 4.0.1 ipsw?

08/22/2010 20:33:03.703 Asking CYDIA for SHSH blobs for iPhone3GS 4.0.1 (8A306)...
08/22/2010 20:33:15.109 SHSH SUCCESSFULLY saved! [Click Here to Open]
08/22/2010 20:33:15.125 You have saved your SHSH locally and the request was sent to CYDIA. This means that CYDIA DOES have your SHSH. Do NOT bug semaphore about the Cydia home page showing this version.
08/22/2010 20:33:15.140 Caching shsh files...
08/22/2010 20:33:15.156 Found [1] shsh files to cache...
08/22/2010 20:33:15.218 Cached [1] shsh files
08/22/2010 20:33:19.625 Starting TSS service on port 80
08/22/2010 20:33:19.625 TSS Accepting connections...
08/22/2010 20:33:19.640 TSS Server Started!

that mean i had save .shsh ???

Yes I did same ae instruction

[rikkter]

Originally Posted by whitebeard

There's no possibility to crushed your iphone using this guide..?

how about if you encountered an error using tinyumbrella..?

i'm not saying it WON'T. i can only speak from my experience.

For me it WORKED and again, i've NEVER saved any SHSH before 4.0.2

[mounir0020]

Originally Posted by partapmobile

Here is procedure......

Navigate to C:\Windows\System32\drivers\etc\ and locate “hosts” file.
Open this “hosts” file in Notepad and add this line in the end

74.208.105.171 gs.apple.com

And then i open my itune using 9.2.1, Select shift+restore and phone starting downgrade.......wow

this solution worked just if ur shsh saved by cydia or umbrella