[iPad] iTunes error 20, trying to downgrade 4.3.5 to 4.3.3 (SHSH saved) - MacRumors Forums
Register FAQ / Rules Forum Spy Search Today's Posts Mark Forums Read
Go Back   MacRumors Forums > iPhone, iPod and iPad > iOS > Jailbreaks and iOS Hacks

Reply
 
Thread Tools Search this Thread Display Modes
Old Jul 28, 2011, 02:47 PM   #1
gnychis
macrumors 6502
 
Join Date: May 2009
iTunes error 20, trying to downgrade 4.3.5 to 4.3.3 (SHSH saved)

I am using the newest version of TinyUmbrella (5.00.07), and trying to downgrade my iPad1 from 4.3.5 to 4.3.3.

I have the SHSH blob for 4.3.3 saved, and TinyUmbrella sees that SHSH blob. I have the TSS Server running in TinyUmbrella, then I start iTunes and select the 4.3.3 IPSW to restore from. It extracts the software, it requests the SHSH key, which I see TinyUmbrella catch:
Code:
07/28/2011 15:44:08.481 Wrote TSS response
However, iTunes then gives me an "error 20" and fails. I have tried several times and have had no luck. I have *never* been able to successfully downgrade using TinyUmbrella yet :\
gnychis is offline   0 Reply With Quote
Old Jul 28, 2011, 03:01 PM   #2
AppleFanatic10
macrumors 68000
 
AppleFanatic10's Avatar
 
Join Date: Nov 2010
Location: Los Angeles but missing San Diego </3
Send a message via AIM to AppleFanatic10 Send a message via Skype™ to AppleFanatic10
U have to change your hosts file. Here's a thread on how to change the file:

http://forums.macrumors.com/showthread.php?t=1119612
__________________
White Unibody MacBook, 2.4GHz, 500GB HD, 8GB RAM, OS X 10.9.4, iPad Mini,S3,Compaq Presario CQ60 15.6", 2.16 GHz, 2GB RAM, 250GB HD, W7 Ultimate (dead)
RIP Grandma 5/10/1930 - 9/24/2012
AppleFanatic10 is offline   0 Reply With Quote
Old Jul 28, 2011, 03:11 PM   #3
gnychis
Thread Starter
macrumors 6502
 
Join Date: May 2009
a-ha, needed to be in DFU mode. Found this in TinyUmbrella comments:

Code:
- If you get de "error 20" message: connect your device to the pc, turn it off, and press power 3 seconds, then hold power and ome buttons for 10 seconds, and then only hold the home button. iTunes will say that a recovery device is detected.
gnychis is offline   1 Reply With Quote
Old Aug 13, 2011, 08:46 PM   #4
lundjohnson
macrumors newbie
 
Join Date: Aug 2011
This worked for me as well. Thanks to this thread!

To downgrade iPod Touch 4G from 4.3.5 to 4.3.3.
TinyUmbrella (5.00.09) (default setting, no advanced mode changes)
Need to be in DFU mode. Found this in TinyUmbrella comments:
- If you get de "error 20" message:
connect your device to the pc,
turn it off,
and press power 3 seconds,
then hold power and ome buttons for 10 seconds,
and then only hold the home button.
iTunes will say that a recovery device is detected.
TU log
08/13/2011 18:39:03.604 DFU Device connected
Start TSS Server
08/13/2011 18:43:24.625 Wrote TSS response
08/13/2011 18:43:29.256 DFU Device disconnected
08/13/2011 18:43:37.886 Recovery Device connected:
08/13/2011 18:43:46.335 Recovery Device disconnected: null
It's working (no error 20)
lundjohnson is offline   0 Reply With Quote
Old Oct 7, 2011, 02:44 PM   #5
zacho56
macrumors newbie
 
Join Date: Jul 2011
Location: Newfoundland, Canada
Thumbs up

Quote:
Originally Posted by lundjohnson View Post
This worked for me as well. Thanks to this thread!

To downgrade iPod Touch 4G from 4.3.5 to 4.3.3.
TinyUmbrella (5.00.09) (default setting, no advanced mode changes)
Need to be in DFU mode. Found this in TinyUmbrella comments:
- If you get de "error 20" message:
connect your device to the pc,
turn it off,
and press power 3 seconds,
then hold power and ome buttons for 10 seconds,
and then only hold the home button.
iTunes will say that a recovery device is detected.
TU log
08/13/2011 18:39:03.604 DFU Device connected
Start TSS Server
08/13/2011 18:43:24.625 Wrote TSS response
08/13/2011 18:43:29.256 DFU Device disconnected
08/13/2011 18:43:37.886 Recovery Device connected:
08/13/2011 18:43:46.335 Recovery Device disconnected: null
It's working (no error 20)
BUUUMMPPPPP.

THANK YOU SO MUCH. IT ACTUALLY WORKED!!! Ive been at this for over 6 hours with error 20 man. Thanks a bunch!!!
zacho56 is offline   0 Reply With Quote
Old Dec 5, 2011, 02:46 PM   #6
happypup6969
macrumors newbie
 
Join Date: Dec 2011
Worked for me...
Thanks!
happypup6969 is offline   0 Reply With Quote
Old Dec 6, 2011, 04:47 PM   #7
unlimitedsway
macrumors member
 
Join Date: Oct 2011
this worked for my sister the other day
unlimitedsway is offline   0 Reply With Quote
Old Dec 19, 2011, 11:04 AM   #8
Alurous
macrumors newbie
 
Join Date: Dec 2011
Quote:
Originally Posted by lundjohnson View Post
This worked for me as well. Thanks to this thread!

To downgrade iPod Touch 4G from 4.3.5 to 4.3.3.
TinyUmbrella (5.00.09) (default setting, no advanced mode changes)
Need to be in DFU mode. Found this in TinyUmbrella comments:
- If you get de "error 20" message:
connect your device to the pc,
turn it off,
and press power 3 seconds,
then hold power and ome buttons for 10 seconds,
and then only hold the home button.
iTunes will say that a recovery device is detected.
TU log
08/13/2011 18:39:03.604 DFU Device connected
Start TSS Server
08/13/2011 18:43:24.625 Wrote TSS response
08/13/2011 18:43:29.256 DFU Device disconnected
08/13/2011 18:43:37.886 Recovery Device connected:
08/13/2011 18:43:46.335 Recovery Device disconnected: null
It's working (no error 20)

I have a question, I somehow can't save my SHSH blobs. this appears everytime I try like 10 times: "12/19/2011 12:54:51.679 CYDIA DOES NOT HAVE YOUR SHSH FOR iPhone4 4.0 (8A293) THERE IS NO WAY FOR YOU TO GET THEM. SORRY. YOU ARE JUST TOO LATE."

I have tried doing the DFU mode, TSS server and all but it always gives me error 20. My host file has been modified, I have looked everywhere. Some say to leave it in default settings the TU, others says to uncheck the communicating with Cydia, other says to delete the code from Host file, other says to leave it other says to change the IP, others say to put the "#" infront of it @_@ idk what to do. I have an iPhone 4 in 4.3.5 and I want to downgrade to 4.3.3 :/ any idea what I should do? or another way to save my SHSH blobs, I've tried iFaith that saves it too but he only saves till 4.3.3 so 4.3.5 don't work on it.
Alurous is offline   0 Reply With Quote
Old Dec 20, 2011, 08:39 AM   #9
Hongkongfu
macrumors member
 
Join Date: Jul 2011
if u dbt have shsh blobs for 4.3.5 you can not save them anymore because apple not sign this firmware anymore there is NO WAY

if you have 4.3.3 blobs you can downgrade make sure to start tts server , and make sure to unchek all options in advanced tab in tinyumbrella
Hongkongfu is offline   -1 Reply With Quote

Reply
MacRumors Forums > iPhone, iPod and iPad > iOS > Jailbreaks and iOS Hacks

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Similar Threads
thread Thread Starter Forum Replies Last Post
iPhone: 5.0.1 to 5.1.1 in Iphone 4S, possible? shsh blob saved for 5.1.1. elite002 Jailbreaks and iOS Hacks 7 May 17, 2013 06:47 AM
iPhone: IS there anyway to downgrade without shsh,even tethered downgrade rrares1996 Jailbreaks and iOS Hacks 3 May 3, 2013 09:00 PM
General: Saved SHSH's by Cydia might be incomplete TriJetHero Jailbreaks and iOS Hacks 32 Mar 26, 2013 10:52 PM
iPhone: How to downgrade to 5.1.1 from 6.0.1 without saved SHSH blobs ? Massky Jailbreaks and iOS Hacks 2 Dec 15, 2012 10:21 AM
General: Downgrade 6.0 > 5.1.1 with shsh.. getting 1604 error.. spacemanps Jailbreaks and iOS Hacks 5 Sep 27, 2012 12:09 PM

Forum Jump

All times are GMT -5. The time now is 11:21 AM.

Mac Rumors | Mac | iPhone | iPhone Game Reviews | iPhone Apps

Mobile Version | Fixed | Fluid | Fluid HD
Copyright 2002-2013, MacRumors.com, LLC