Downgrade iPhone OS 4.0 to 3.1.3 - GSM-Forum

blqk · 04-22-2010, 04:37

And works on iphone 3g oldboot... tested by me.

iTunes 9.1
Original firmware 3.1.3
iRecovery v 1.3
Libusb library
Steps to downgrade iPhone 4.0 firmware to 3.1.3

Step #1 Copy the application “iRecovery” on the desktop and install the library “libusb”.
Step #2 Open iTunes, click the ALT key + Restore and manually load the original 3.1.3 firmware.
Step #3 During the restore process, you’ll notice a pop up with error 1015, neglect it.
Step #4 Click Ok to close the pop-ups and close iTunes.
Step #5 Now open the terminal and type the following commands:

cd Desktop
./iRecovery -s
setenv auto-boot true
saveenv
fsboot
exit

Step #6 Wait a few seconds and disconnect the iPhone from the cable, then reboot the phone by clicking Home + Power buttons simultaneously.
Step #7 Once you connect the phone via USB and proceed normally, the Apple logo appears on the display.

Voila! The downgrade from iPhone OS 4.0 to iPhone OS 3.1.3 is successfully completed.

via gadgegtsdna
via ispazio

dragosgsm · 04-22-2010, 23:34

so what's the point of all this since bouth version aren't unlockable/jailbrakeable?
there are person that do not agree with multitasking and other os 4.0 new feautures????????????

https · 04-22-2010, 23:38

Quote:

Originally Posted by dragosgsm

so what's the point of all this since bouth version aren't unlockable/jailbrakeable?
there are person that do not agree with multitasking and other os 4.0 new feautures????????????

Firmware 4 is in Beta, which means it is very unstable and has lots of bugs.

Bigbrothers2000 · 04-22-2010, 23:57

Quote:

Originally Posted by blqk

And works on iphone 3g oldboot... tested by me.

iTunes 9.1
Original firmware 3.1.3
iRecovery v 1.3
Libusb library
Steps to downgrade iPhone 4.0 firmware to 3.1.3

Step #1 Copy the application “iRecovery” on the desktop and install the library “libusb”.
Step #2 Open iTunes, click the ALT key + Restore and manually load the original 3.1.3 firmware.
Step #3 During the restore process, you’ll notice a pop up with error 1015, neglect it.
Step #4 Click Ok to close the pop-ups and close iTunes.
Step #5 Now open the terminal and type the following commands:

cd Desktop
./iRecovery -s
setenv auto-boot true
saveenv
fsboot
exit

Step #6 Wait a few seconds and disconnect the iPhone from the cable, then reboot the phone by clicking Home + Power buttons simultaneously.
Step #7 Once you connect the phone via USB and proceed normally, the Apple logo appears on the display.

Voila! The downgrade from iPhone OS 4.0 to iPhone OS 3.1.3 is successfully completed.

via gadgegtsdna
via ispazio

Too much things.
put in restore , write 3.1.3
you get 1015 error
use blackrain and that is it.
iphone will work again with 3.1.3

blaiseid · 04-23-2010, 18:25

Link not rapidshare for OS4 beta please!!!

blaiseid · 04-23-2010, 19:25

OS 4 beta is not there.

Bigbrothers2000 · 04-23-2010, 22:36

3G: Download iPhone1,2_4.0_8A230m_Restore.ipsw from General-Search.com
3GS: Download iPhone2,1_4.0_8A230m_Restore.ipsw from General-Search.com

blqk · 04-23-2010, 22:39

ya... i downgrade to 3.1.2. Bigbrothers2000, yes another away..

blaiseid · 04-23-2010, 23:18

so os 4 beta accept to be loaded easily on iphone with no error???

04-22-2010, 04:37	#1 (permalink)
blqk Freak Poster Join Date: Sep 2005 Location: Alentejo Posts: 115 Member: 179128 Status: Offline Thanks Meter: 24	Downgrade iPhone OS 4.0 to 3.1.3 And works on iphone 3g oldboot... tested by me. iTunes 9.1 Original firmware 3.1.3 iRecovery v 1.3 Libusb library Steps to downgrade iPhone 4.0 firmware to 3.1.3 Step #1 Copy the application “iRecovery” on the desktop and install the library “libusb”. Step #2 Open iTunes, click the ALT key + Restore and manually load the original 3.1.3 firmware. Step #3 During the restore process, you’ll notice a pop up with error 1015, neglect it. Step #4 Click Ok to close the pop-ups and close iTunes. Step #5 Now open the terminal and type the following commands: cd Desktop ./iRecovery -s setenv auto-boot true saveenv fsboot exit Step #6 Wait a few seconds and disconnect the iPhone from the cable, then reboot the phone by clicking Home + Power buttons simultaneously. Step #7 Once you connect the phone via USB and proceed normally, the Apple logo appears on the display. Voila! The downgrade from iPhone OS 4.0 to iPhone OS 3.1.3 is successfully completed. via gadgegtsdna via ispazio

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04-22-2010, 23:34	#2 (permalink)
dragosgsm No Life Poster Join Date: May 2005 Location: Bacau Posts: 3,227 Member: 148032 Status: Offline Thanks Meter: 415	so what's the point of all this since bouth version aren't unlockable/jailbrakeable? there are person that do not agree with multitasking and other os 4.0 new feautures????????????

04-23-2010, 18:25	#5 (permalink)
blaiseid No Life Poster Join Date: Aug 2003 Location: Town City Age: 54 Posts: 3,485 Member: 37735 Status: Offline Sonork: 100.103255 Thanks Meter: 205	Link not rapidshare for OS4 beta please!!!

04-23-2010, 19:25	#6 (permalink)
blaiseid No Life Poster Join Date: Aug 2003 Location: Town City Age: 54 Posts: 3,485 Member: 37735 Status: Offline Sonork: 100.103255 Thanks Meter: 205	OS 4 beta is not there.

04-23-2010, 22:36	#7 (permalink)
Bigbrothers2000 No Life Poster Join Date: Sep 1999 Location: Europe Age: 51 Posts: 1,378 Member: 487 Status: Offline Thanks Meter: 65	3G: Download iPhone1,2_4.0_8A230m_Restore.ipsw from General-Search.com 3GS: Download iPhone2,1_4.0_8A230m_Restore.ipsw from General-Search.com

04-23-2010, 22:39	#8 (permalink)
blqk Freak Poster Join Date: Sep 2005 Location: Alentejo Posts: 115 Member: 179128 Status: Offline Thanks Meter: 24	ya... i downgrade to 3.1.2. Bigbrothers2000, yes another away..

04-23-2010, 23:18	#9 (permalink)
blaiseid No Life Poster Join Date: Aug 2003 Location: Town City Age: 54 Posts: 3,485 Member: 37735 Status: Offline Sonork: 100.103255 Thanks Meter: 205	so os 4 beta accept to be loaded easily on iphone with no error???