Downgrade Original iPhone to iOS 1.0

[AmazingHenry]

I've got an original iPhone/iPhone 2G, and I'd really like to downgrade it to iOS 1.0. I tried Google, and I found many guides on how to do this. Some are really easy, but some are long and complicated. What is the easiest way that actually works? I'd appreciate someone who has done the process to link me to some working instructions. Thanks so much!

P.S. I know that it's actually called "iPhone OS" or "OS X".

 

[jr866gooner]

You should post some pics of the device and screens. For nostalgic reasons of course!

 

[eyoungren]

I've got an original iPhone/iPhone 2G, and I'd really like to downgrade it to iOS 1.0. I tried Google, and I found many guides on how to do this. Some are really easy, but some are long and complicated. What is the easiest way that actually works? I'd appreciate someone who has done the process to link me to some working instructions. Thanks so much!

P.S. I know that it's actually called "iPhone OS" or "OS X".

Might want to try over here… https://forums.macrumors.com/forums/jailbreaks-and-ios-hacks.105/

You're probably going to need to be jailbroken.

 

[Applejuiced]

It's a very long and complicated process. The lowest most were able to go is 1.1.4 and not 1.0

 

[AmazingHenry]

It's a very long and complicated process. The lowest most were able to go is 1.1.4 and not 1.0

I guess I was pretty lucky to get to 1.1.1, then. I've gotten it downgraded to 1.1.1 but I couldn't jailbreak it.

You should post some pics of the device and screens. For nostalgic reasons of course!

Once I get it downgraded, I sure will!

Might want to try over here… https://forums.macrumors.com/forums/jailbreaks-and-ios-hacks.105/

You're probably going to need to be jailbroken.

I have a valid AT&T SIM card to activate it with.

 

[eyoungren]

I have a valid AT&T SIM card to activate it with.

What I mean is that in order to do any downgrading you will probably have to jailbreak the phone first.

I don't think the SIM card of activation has anything to do with what you are trying to accomplish.

Jailbreaking is that act of using exploits to escalate priviledges. That allows you to do things you ordinarily would not be able to do.

However, I only came in to Apple and iOS with iOS 5 so I have no idea exactly what you need to do.

It seems however @Applejuiced does.

 

[Applejuiced]

I guess I was pretty lucky to get to 1.1.1, then. I've gotten it downgraded to 1.1.1 but I couldn't jailbreak it.

Once I get it downgraded, I sure will!

I have a valid AT&T SIM card to activate it with.

Wow, you got it that low.
That's pretty good.
Way too many hoops to jump to get it that low.
I would have went for 3.1.3

 

[Gathomblipoob]

What I mean is that in order to do any downgrading you will probably have to jailbreak the phone first.

I don't think the SIM card of activation has anything to do with what you are trying to accomplish.

Jailbreaking is that act of using exploits to escalate priviledges. That allows you to do things you ordinarily would not be able to do.

However, I only came in to Apple and iOS with iOS 5 so I have no idea exactly what you need to do.

It seems however @Applejuiced does.

I remember that first 74-step jailbreak. One misstep and it was back to square one. Jeesh.

 

[eyoungren]

I remember that first 74-step jailbreak. One misstep and it was back to square one. Jeesh.

I read about it a couple years ago. Lots of software/hardware stuff going on. Back when bricking the phone was a real possibility - not this bootloop stuff people freak out over now.

Comparatively, I jailbroke iOS 5 on my 3GS three times before I spotted Cydia on my springboard. It jailbroke the first time but it was so quick and easy I didn't realize it WAS jailbroken until the third time around!

 

[12vElectronics]

What's the purpose of your downgrade OP?

 

[AndrewR23]

What's the purpose of your downgrade OP?

nostalgic

 

[AmazingHenry]

nostalgic

Yep.

Does anyone have an actual answer? I know there's been success before. I'm away from my computers now and can't start trying until Monday, so take your time.

 

[Ternary]

I've managed to downgrade an original iPhone to 1.0.2. 1.0 didn't work for some reason, and 1.0.2 was similar, but with bug fixes.

To be honest, the roadblocks and frustrations it takes to complete the downgrade aren't worth the results. For one, you'll need a spare Windows XP computer to do it (not a VM if I can recall). In my case, the only XP computer I had was from 2001, so that was quite an adventure. Also, you'll need to be prepared to endure through intensive hours of troubleshooting and pulling your hair out. It's a really difficult process, and even if you follow all the instructions, there's still a good chance you'll fall into an error at some point.

And if you can make it through all those barriers and successfully downgrade, you'll quickly realize how limited iPhone OS 1.0 really is. You can't install any additional apps, and after playing around with the included apps (which are quite watered down compared to newer versions), there's a good chance you'll get bored due to what little you can really do. In essence, you're putting yourself through a lot of grief in order to cripple the functionality of your phone.

So unless you like the challenge, cannot live without that dose of nostalgia, or desire to showcase the iPhone like a museum artifact, I wouldn't recommend trying the downgrade. If you do fit one of those three reasons however, I used this YouTube guide to work through the process.

 

[Applejuiced]

Wow, you got lots of time and patience
But pretty much what you said it's spot on.
It's not worth the aggravation.

 

[Zimmy68]

I think I have the first iPod touch in a drawer somewhere which was basically the first phone.
That was back when they wanted to charge money for os updates.
Much better times now.

 

[G.McGilli]

I have original iPhone jailbroken - would be fun to downgrade it. I forget what the jailbreak is - but it has the Pineapple logo when the phone boots. Good times....

 

[AmazingHenry]

I've managed to downgrade an original iPhone to 1.0.2. 1.0 didn't work for some reason, and 1.0.2 was similar, but with bug fixes.

To be honest, the roadblocks and frustrations it takes to complete the downgrade aren't worth the results. For one, you'll need a spare Windows XP computer to do it (not a VM if I can recall). In my case, the only XP computer I had was from 2001, so that was quite an adventure. Also, you'll need to be prepared to endure through intensive hours of troubleshooting and pulling your hair out. It's a really difficult process, and even if you follow all the instructions, there's still a good chance you'll fall into an error at some point.

And if you can make it through all those barriers and successfully downgrade, you'll quickly realize how limited iPhone OS 1.0 really is. You can't install any additional apps, and after playing around with the included apps (which are quite watered down compared to newer versions), there's a good chance you'll get bored due to what little you can really do. In essence, you're putting yourself through a lot of grief in order to cripple the functionality of your phone.

So unless you like the challenge, cannot live without that dose of nostalgia, or desire to showcase the iPhone like a museum artifact, I wouldn't recommend trying the downgrade. If you do fit one of those three reasons however, I used this YouTube guide to work through the process.

Wow, you got lots of time and patience
But pretty much what you said it's spot on.
It's not worth the aggravation.

I do like a challenge, and I do still want to do the process on Monday. One question: The only computer I have that can natively boot Windows XP is an old Intel iMac. Would that work?

 

[Applejuiced]

Yes, that shouldn't be a problem.

 

[jav6454]

I've got an original iPhone/iPhone 2G, and I'd really like to downgrade it to iOS 1.0. I tried Google, and I found many guides on how to do this. Some are really easy, but some are long and complicated. What is the easiest way that actually works? I'd appreciate someone who has done the process to link me to some working instructions. Thanks so much!

P.S. I know that it's actually called "iPhone OS" or "OS X".

You can't. The only tools available to achieve this task is called Pwnage Tool which only goes as far back as iPhone OS 1.1.3

Anything behind that is a no go.

 

[AmazingHenry]

You can't. The only tools available to achieve this task is called Pwnage Tool which only goes as far back as iPhone OS 1.1.3

Anything behind that is a no go.

There has been success with downgrading to 1.0 before. As said earlier, I managed to get to 1.1.1 using iTunes 7 on Windows XP.

 

[jav6454]

There has been success with downgrading to 1.0 before. As said earlier, I managed to get to 1.1.1 using iTunes 7 on Windows XP.

You can't go to 1.0.0 because the way the iPhone handles the Baseband check will not let you proceed, those checks are oly removed through Pwnage which was never made into handling 1.0.0...

 

[AmazingHenry]

You can't go to 1.0.0 because the way the iPhone handles the Baseband check will not let you proceed, those checks are oly removed through Pwnage which was never made into handling 1.0.0...

Then why have people successfully done it before?

 

[jav6454]

Then why have people successfully done it before?

No one has done it. Once you hit 1.1.1, there is no way down. The only way possible is if the software was already at 1.0.1 or 1.0.2

Not even through BootNeuter can you achieve this, and that's already pretty complex stuff on its own.

 

[AmazingHenry]

No one has done it. Once you hit 1.1.1, there is no way down. The only way possible is if the software was already at 1.0.1 or 1.0.2

Not even through BootNeuter can you achieve this, and that's already pretty complex stuff on its own.

It has been done. Try

. There are other videos as well. People have successfully downgraded.

 

[jav6454]

It has been done. [...] People have successfully downgraded.

You need Zibri's ZiPhone, you need Dev Team's early BootNeuter and Pwnage versions, you need the iPhone OS bundles and even SSH know how. You even need the first unlocking software patch anySIM which is no longer even there in Cydia.

Many things that are no longer available. Specially given how old every thing is.