2.0 can be manually downloaded and installed. But do not do it! I tried it on my test phone and it seems to be permanently updated. You will need to wait for dev team and pwn 2.0 as a straight upgrade may be a one-way street. Understand that there is a difference between pwning 2.0 and updating to 2.0. Your pwning would start in 1.1.4.
Using common download procedures, DFU mode results in error 1600 and restore mode in error 20. No downgrade occuring.
Update: I have managed to downgrade successfully thanks to Geeb and Crumpx. I have added a guide to do the downgrade in the guides section.
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1. Fteam July 11th, 2008, 4:34 am
i followed your tutorial for the downgrade from 2.0 to 1.1.4 but i got an error when starting iTunes7.5 telling me ‘Can not read the file tnues library.itl’ because it was created using a newer version of iTunes.
Any idea please ? thx ;)
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2. BigBoss July 11th, 2008, 5:18 am
Yes, search for and delete the file. Windows search or spotlight in OSX should find it. Just search for *.itl
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3. kAgEmAn July 11th, 2008, 6:12 am
Hi! I’m getting the 1604 error when restoring back to 1.1.4 in iTunes 7.5. Any idea what could be the cause of it? Thanks!
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4. BigBoss July 11th, 2008, 6:13 am
Are you on a MAC?
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5. kAgEmAn July 11th, 2008, 6:16 am
Yes I am. PPC to be exact and on Leopard
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6. BigBoss July 11th, 2008, 6:16 am
Seems to be common on a MAC. Try a PC if you can. If not, I don’t have any suggestion at the moment.
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7. kAgEmAn July 11th, 2008, 6:17 am
Oh ok. Thanks anyway! I’ll try to get a PC then.
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8. gagapaa July 11th, 2008, 11:11 am
i try to restore but it says i need newer iTunes cause there’s no iPhone program for available.
“2.0 to 1.1.4 Downgrade”
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9. gagapaa July 11th, 2008, 11:20 am
now it says unknown error (5) .. graah
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10. zommah July 11th, 2008, 11:24 am
BigBoss — one problem in this process is re-unlocking the phone.
I can go from 2.0 back to 1.1.4 fine and pwn the phone — however, my ATT SIM (not iPhone data plan, not activated) will not work. I also cannot unlock the phone because ( I think ) the baseband from the 2.0 firmware is too new. Bootneuter fails (err-5) in trying to go from my current 3.9 bootloader, not neutererd, not locked to anything else. Thus, I cannot really revert all the way back. I think this will be a common problem — how did you get around it?
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11. gagapaa July 11th, 2008, 11:44 am
and 1403
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12. abothra July 11th, 2008, 11:56 am
i tried doing the method u suggested but it shows an error (20) after extracting the 1.1.4 firmware in itunes 7.5 on my pc
Any help please would really be very helpful
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13. mattnetcs July 11th, 2008, 6:42 pm
ive managed to do most of the method that you mentioned (thank you so much for this, i almost crapped myslef thinking that i had bricked my phone)
But anyway, i cant get
To get back to 04.04.05_G (1.1.4 baseband) load bootneuter. If you don’t have this, install it from installer. Run bootneuter with Neuter, 4.6, and unlock. When it’s done, you will have an unlocked 04.04.05_G right back where you started.
This bit to work, i keep getting error code 5?
Any ideas would be fantastic
Again thank you so much
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EvilGonzo Reply:
July 19th, 2008 at 3:26 pm
Same happened to me, but I figured out how to fix it, and is working.
You need to use the “ZiPhone patched by kIREmK” version, just click on “downgrade” and “debug”. But the trick to get this done is to “jailbreak” the iphone BEFORE running the downgrade. Is the only way I managed to get my phone back from the BB 04_05_04_G!!
Steps:
Step 1) You need to uninstall iTunes 7.7 and install iTunes 7.5 or 7.6.
Step 2) Now that you have iTunes 7.5/7.6, put your phone into DFU mode.
Step 3) Restore using iTunes 7.5/7.6. You will get an error like 1011, 1012, 1013, 1015 this is normal. Errors 1601, 1602, 1600 or anything else are not ok.
Step 4) Once you get the error above, leave iTunes open and kick your phone out of restore mode. I recommend iLiberty+
Step 5) Now use iLiberty+ (or any) to Jailbreak the phone and then run the patched ziphone version, just use “downgrade” and “debug”. After this you should have your phone ready without the 04.05.04_G BB.
Step 6) Restore using iTunes 7.5/7.6 to the original 1.1.4. Done, your iphone was restored to factory defaults, now use winpwn or the flavor you like to get your custom firmware, and you’ll see that the bootneuter now is working!!!.
hope this helps!!
EG.
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14. Fteam July 11th, 2008, 10:35 pm
i followed your tutorial. And all worked 100% i have now my iphone back to life :D thx
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15. princenaledge July 11th, 2008, 11:10 pm
Somebody please help i did everything I got as far as to install Boot Neuter. But when i go to Flash it after selecting 4.9 , neuter and unlock just as the guide says it gives me an error saying it couldnt flash it. What do i do? I can fully use my iphone except make phone calls it for some reason does not find my sim card. Email me at m.matt@verizon.net please!
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16. mattnetcs July 12th, 2008, 4:32 am
Hi all
I have now succsesfully managed to get my iphone back up and running, a very scary process and has taken me all of 14 hours to do. (more me being noob than anything else) unforchunatly i had to use the patched version of ziphone to restore the original bootloader and i kept getting error 5 when trying to use bootneuter. thankfully it worked this time, god knows if it would ever happen again. But thank you so much for all the help from this website, i very almost gave up and threw the phone in the bin
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17. princenaledge July 12th, 2008, 9:41 am
mattnetcs can you please help me i have got my iphone actually up and running but i canot get bootneuter to work ive tried a few things already..but i just cannot get it to work therefore i cannot use it as a phone
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18. metalhead76446 July 12th, 2008, 10:34 am
by the way i am using at&t for my service so that might help in my case.as far as those of you that did the jailbreak and unlock to use on a different carrier is probably why the baseband does not work correctly on your phones. but i do hope you all get your phones working correctly for you again.
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19. twizotte July 12th, 2008, 11:08 am
guys,
i did this…
I used 1.1.3 firmware, (not that much different than 1.1.4…) and i got the 1015 error.
I followed the instructions up to where you need to be taken out of restore mode.
I used Iliberty to force the phone into normal mode and it activated.
Then I used Ziphone to unlock, jailbreak, and activate.
Rob
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20. mattnetcs July 12th, 2008, 2:27 pm
I reloaded my iphone back to 1.1.4 with itunes, and got the 1015 error. Used Ziphone to get the phone back into normal mode, used ziphone to unlock it, jailbreak etc…. and then used the patched ziphone app to downgrade the baseband to 04.04 (from 04.05 which 2.0 gives you) then rejailbroke the phone and got it back up and running.
oooo and to check the baseband version, if you type *3001#12345#* into the phone dialer, either in normal mode or as an emergency call and then click on the version tab it should tell you what baseband your running. Once youve got it so that it says 04.04 you should see that the phone also says what carrier your on and gives you signal. Unforchuntaly i cant be too much more help as i have no real idea how i did most of this, i basically read through everything that i could find on the net (and this website) and spent 14 hours doing it. Hope some of this helps, if not ill try and put together a list of what i did. Also i dont know if this matters, but im in the UK using a UK phone on Vodafone
Cheers
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21. Domonique July 12th, 2008, 4:44 pm
i need serious help….my iphone was working fine(im on tmobile) i plugged it up earlier today and itunes automatically upgraded to 2.0 needless to say my fone is not working….i cant even turn my fone on to come on it simply shows a diagram saying connect to itunes…..i tried the steps you said but when i let go of the home button theres no way for me to restore my phone i tunes says Songs cannot be added to “^1” because all of its space has been reserved for data. i am near tears can someone help me please
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22. Domonique July 12th, 2008, 4:45 pm
p.s.
i think my phone is stuck in recovery mode the emergency phone call screen doesnt even show up
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23. kenvunz July 12th, 2008, 6:57 pm
Use the patch version of ZiPhone, called KiPhone, to erase the baseband 04.05.04_G from FW 2.0, then use iTunes again to restore your phone back to 1.1.4, by doing that, iTunes will install the baseband 04.04.05_G to you phone. Then you should be able to bootneutered your phone however you wanted.
Thats how i did anyway.
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24. Yermucker July 13th, 2008, 8:26 am
I cant make any progress at all, goes into dfu mode then nothing finds it. and i get the error message 20, either that or it tells me to update to 7.7 again.
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25. iphoneinterest July 13th, 2008, 11:41 am
ERROR: 1012
I upgraded my 1.1.4 iPhone to the new 2FW release. Surprise surprise, nothing worked. So I’ve been trying to downgrade to 1.1.4 again using iTunes 7.5. No problem there, except…when I complete the restore of 1.1.4 i get error 1012
I managed to boot the phone, and checked the IMEI, ICCID, Modem etc… and the values were all blank. Then i got a msg on the iPhone screen saying “This iPhone cannot make or receive calls.”
But stuck on where to go? any ideas?
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26. danielrn July 13th, 2008, 2:24 pm
i unistall itunes 7.7 and then install 7.5 but wen i gointo to restore my iphone it shows an error (20) after extracting the 1.1.4 firmware in itunes 7.5 on my pc
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27. omarrashad July 13th, 2008, 4:11 pm
I download the itunes 7.5 and make the iphone in DFU mode but the itunes 7.5 didn’t sse it please advise!!!
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28. BigBoss July 13th, 2008, 4:16 pm
You guys are reading the guide? http://sleepers.net/news/?page_id=216
Error 20 is covered in the guide: you are not in DFU mode.
The guide talks about how to properly downgrade your itunes from 7.7 to 7.5 allowing you to have the 7.7 driver with itunes 7.5. This lets your DFU mode device be recognized.
Error 1012 is new. Try restoring 1.1.4 again and see if you still get the error.
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29. omarrashad July 13th, 2008, 4:40 pm
I used the iliberty and the itunes 7.5 see my iphone but when i restore it the itunes 7.5 says that my iphone will be restored to the factory settings and upgraded with new update(RESTORE & UPDATE) all in one button did i go on with it or it will update me to 2fm again
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30. ayushjain July 13th, 2008, 6:18 pm
I used iTunes 7.5 in DFU mode. I could downgrade from 2.0 to 1.1.4. Then I used pwc to get to normal mode. But I can’t get the baseband down from 04.05.04_G to 04.04.05. Please tell me how to. The patched ziphone link is broken. Can someone post it here.
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31. omarrashad July 13th, 2008, 6:21 pm
error 1015 any one can help
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32. Eddi7117 July 13th, 2008, 10:47 pm
Got It WORKING!!!! Thankyou x 100!!!
I bought my first iPhone today with 2.0 pre-installed by seller. Followed the instructions from here & iclarified.com and it worked using iTunes 7.5, winpwn & iLiberty in that order, but I had NO service. Trying Bootneuter gave the Error (5). So this is what I did to get my T-Mobile sim working using tips from the above comments:
1)Followed instructions up to iTunes Error 1015. 2)Ran winpwn
3)ran iLiberty
4)Then I ran Kiphone (selected “DownGrade” & “Debug”)
After a few anxious moments, my phone rebooted, had full bars & T-Mobile on the top. Itunes then opened, synced, and it all works perfect.
Thanks to the BigBoss & the posters for the help. Before 5pm I was a Noob thas never had a iPhone, nor used one.
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jmchell Reply:
July 17th, 2008 at 9:08 am
I had this exact issue…although not so lucky with downgrading & debuging….in fact whenever i try Kiphone the programme closes down when I hit go??? Been at t 2 days now!!
I am using a USA phone in france with official carrier (orange) unlocked, jail brocken etc..was fine until i updated to 2.0..I have the phone working apart from the cell phone side of things….I have downgraded to Itunes 7.5 and the phone is now on 1.1.4 the current version is 04.05.04_G and i cant downgrade this with any of the suggested programmes??? I am at the point were I may just wait until 2.0 is cracked then upgrade…Thanks!!
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33. rumenk July 14th, 2008, 3:38 am
hey, i ok with updating, i don’t use third-party apps anyway, but since i live in Italy and i am afraid my iPhone will be locked and i won’t be able to use the sim. Do you guys now if this will happen?
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34. ozone July 14th, 2008, 3:57 am
Just wanted to say a big thanks, BigBoss. My dad accidentally upgraded his firmware from 1.1.4 to 2.0, and your guide made it easy to restore the phone so that it’s working OK again.
One comment: you may want to say how to “kick your phone out of restore mode”. It took me a little while to figure out that this was a menu option in iLiberty+ (for Mac OS X). I realise this is obvious for people who’ve done a lot of iPhone hacking, but if you just stumbled upon this guide and have only unlocked a phone once or twice, it’s not obvious how to get it out of restore mode.
Anyways, many thanks!
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35. Sorin19 July 14th, 2008, 5:23 am
Unfortunatly is not as easy as it seems. If somebody has an answer please reply. I tried to download itunes 7.5 from different sites. It seems that there are somehow different versions of 7.5 because i have different error messages. Eror 20 in itunes 7.5 yes in 7.5 and even worse..that there is a newer version of itunes…so..i canot restore i can’t do anything, even worse it’s very hard to control the iphone because if i turn it on i got the picture with the cable and the icon from itunes.
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36. Yermucker July 14th, 2008, 5:31 am
good work, BigBoss
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37. Eddi7117 July 15th, 2008, 6:44 pm
A lil off topic, I was able to downgrade the other night, but I’ve noticed none of my stuff will save (Favorites, Weather-City, World Clocks), as soon as I exit out it goes back to default. This is my first iphone, is this a issue with only me or does unlocking have something to do with it. Thanks
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38. BigBoss July 15th, 2008, 6:49 pm
Unlocking has not anything to do with this. You must have messed up permissions. Try bossprefs “fix user dir permissions” button.
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39. dewasaid July 16th, 2008, 2:32 am
BigBoss,
Wow….!
What a steps…!
Any easier way to do it? I am not technical?
Thanks
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40. jmchell July 17th, 2008, 9:09 am
jmchell Reply:
July 17th, 2008 at 9:08 am
I had this exact issue…although not so lucky with downgrading & debuging….in fact whenever i try Kiphone the programme closes down when I hit go??? Been at t 2 days now!!
I am using a USA phone in france with official carrier (orange) unlocked, jail brocken etc..was fine until i updated to 2.0..I have the phone working apart from the cell phone side of things….I have downgraded to Itunes 7.5 and the phone is now on 1.1.4 the current version is 04.05.04_G and i cant downgrade this with any of the suggested programmes??? I am at the point were I may just wait until 2.0 is cracked then upgrade…Thanks!!
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41. jmchell July 17th, 2008, 9:23 am
…………………..{edit) with iliberty i get wrong bootloader version 3.9 M3S2 and i cant run winpwner??
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42. Mark July 17th, 2008, 11:11 am
Thanks for the guide, I had to make a few modifications, but I was able to get the 2.0 firmware off and 1.1.4 back on. If I look in my settings I can clearly see that the firmware shows it is downgraded and that i’m back on 1.1.4.
Problem is, I’ve tried several different cracking apps and none of them are able to activate the phone any longer. I’m on the old version, but I still don’t have any signal after cracking. Any ideas?
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43. Anonymous July 17th, 2008, 1:47 pm
I get this all the time..always searching for the phone..
ZiPhone v2.0 by Zibri. http://zibree.blogspot.com
Source code available at: http://www.iphone-elite.org
Loading zibri.dat.
Searching for iPhone…
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44. jj July 17th, 2008, 10:13 pm
hello, i try this once and i got it success fully done then i got another phone but when i put in dfi mode it say can’t contact server
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45. jj July 17th, 2008, 10:14 pm
any help
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46. jmchell July 18th, 2008, 9:53 am
Got mine sorted…back to firmware 04.04.05_G
if like me you downgraded to 1.4 from 2.0 but the “PHONE” PART WASNT WORKING CHECK OUT THIS BLOG
http://forums.macrumors.com/showthread.php?t=516349
Follow the link above…been on it for 3 days….it worked for me!
Good luck!
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BigBoss Reply:
July 18th, 2008 at 4:12 pm
I believe this is the same as my updates in the guide and file links for kiphone.
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47. yuyi July 18th, 2008, 9:32 pm
I have put the iphone in DFU mode but when i want to restore it to 1.4 using itunes error 1403 pops out..pls help, anyway i’m using pc
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48. Nik July 18th, 2008, 11:20 pm
I have followed ur steps to downgrade iphone from 2.0 - 1.1.4 and i unlocked and activated with ziphone The problem is that after i did all this thing my i phone can not find any network (no service)
Kindly Plz help me…
What should i do to get the network in my iphone
blackeyednik@gmail.com
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49. kimberly July 20th, 2008, 1:35 am
I’ve followed your steps which is first downgrade iTunes 7.7 to 7.5 and then apply DFU mode on iPhone. But when DFU mode is applied on iPhone, it says that I need iTunes 7.7 or latest version of iTunes to restore my phone. Lets give it a say. I upgrade my iTunes back to 7.7, will it restore back to iPhone 1.1.4 or 2.0?
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50. Andrew July 25th, 2008, 8:40 am
I have followed ur steps to downgrade iphone from 2.0 - 1.1.4 and i unlocked and activated with ziphone The problem is that after i did all this thing my i phone can not find any network (no service)
can anyone offer help
What should i do to get the network in my iphone
andrew at chesney.org
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51. Anonymous August 9th, 2008, 3:31 pm
I have followed ur steps to downgrade iphone from 2.0 - 1.1.4 and i unlocked and activated with ziphone The problem is that after i did all this thing my i phone can not find any network (no service)
can anyone offer help
What should i do to get the network in my iphone
peter@gmail.com
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52. Anonymous August 9th, 2008, 3:31 pm
I have followed ur steps to downgrade iphone from 2.0 - 1.1.4 and i unlocked and activated with ziphone The problem is that after i did all this thing my i phone can not find any network (no service)
can anyone offer help
What should i do to get the network in my iphone
petervandevlag@gmail.com
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53. innedmyiphone August 29th, 2008, 1:24 pm
My Iphone is kurupt i try to restore it and it finishs the process and it says UNKNOWN ERROR {20} can u help me out!
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