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lagwagon

Suspended
Oct 12, 2014
3,899
2,759
Calgary, Alberta, Canada
I didn't see him try it, so....

It must be possible to put it in DFU mode. Just turn it off first and hold the buttons.

A DFU won't fix the Jan 1 1970 bug. The only way to get your phone back is to physically open up the phone and unplug the battery to reset the PRAM. Or you can let the battery fully drain and let it sit for a bit which should also reset the PRAM.
 
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Jayson A

macrumors 68030
Sep 16, 2014
2,671
1,935
A DFU won't fix the Jan 1 1970 bug. The only way to get your phone back is to physically open up the phone and unplug the battery to reset the PRAM. Or you can let the battery fully drain and let it sit for a bit which should also reset the PRAM.

So that doesn't seem like a complete brick then.
 

lagwagon

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Oct 12, 2014
3,899
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Calgary, Alberta, Canada
Opening the phone voids the warranty. You're either waiting for months or opening the device.

As The Doctor11 said. It doesn't take too long for the battery to die. The phone screen stays on I believe because it get stuck on the boot screen. I've heard even the back of the phone will get hot because it gets stuck doing something.

Definitely not months to wait. Worst case half a day, but I would imagine 3-5 hours, perhaps less if it wasn't at full charge.
 
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Paddle1

macrumors 603
May 1, 2013
5,149
3,600
Waiting for months? The battery is only going to take a few hours to die...

As The Doctor11 said. It doesn't take too long for the battery to die. The phone screen stays on I believe because it get stuck on the boot screen. I've heard even the back of the phone will get hot because it gets stuck doing something.

Definitely not months to wait. Worst case half a day, but I would imagine 3-5 hours, perhaps less if it wasn't at full charge.
Oops, I thought it said for the battery to drain completely.

Edit: Which it does, doesn't the battery save a bit of charge in it? Or were you talking about something else.
 

C DM

macrumors Sandy Bridge
Oct 17, 2011
51,392
19,461
Waiting for months? The battery is only going to take a few hours to die...

As The Doctor11 said. It doesn't take too long for the battery to die. The phone screen stays on I believe because it get stuck on the boot screen. I've heard even the back of the phone will get hot because it gets stuck doing something.

Definitely not months to wait. Worst case half a day, but I would imagine 3-5 hours, perhaps less if it wasn't at full charge.
With the phone not doing anything and essentially being off or close to it it seems like it would likely take a long time for the battery to drain.
 

lagwagon

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Oct 12, 2014
3,899
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Calgary, Alberta, Canada
With the phone not doing anything and essentially being off or close to it it seems like it would likely take a long time for the battery to drain.

The phone doesn't turn off. It's in a constant boot state (pretty much an infinite boot loop) because it bugs out and goes into negative time.
 

The Doctor11

macrumors 603
Dec 15, 2013
6,031
1,519
New York
With the phone not doing anything and essentially being off or close to it it seems like it would likely take a long time for the battery to drain.
The screen being on is enough to kill the battery itself, but it appears it is also doing something which explains why some people say it gets hot if you just let it sit like that. It's trying to figure out the time.

http://blog.lfcameron7.xyz/2016/02/11/1st-jan-1970-64-bit-ios-bug/
Now, the bricking could be caused by the fact that iOS is dividing by this value to calculate the time and date and we all know that diving by 0 = RIP, it will cause a fault in the kernel which will make the device unable to boot. On the other hand, this could be due to using an unsigned int to represent the value, an unsigned int can only be using to hold values of positive numbers, and after calculations executed to calculate the date & time, the value could end up as a negative number.
 

Paddle1

macrumors 603
May 1, 2013
5,149
3,600
The screen being on is enough to kill the battery itself, but it appears it is also doing something which explains why some people say it gets hot if you just let it sit like that. It's trying to figure out the time.

http://blog.lfcameron7.xyz/2016/02/11/1st-jan-1970-64-bit-ios-bug/
You know how the iPhone shows this screen when the battery runs out:

ios_low_battery.png


Does that count as "completely draining" the battery? Would that fix the endless boot?
 

lagwagon

Suspended
Oct 12, 2014
3,899
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Calgary, Alberta, Canada
You know how the iPhone shows this screen when the battery runs out:

ios_low_battery.png


Does that count as "completely draining" the battery? Would that fix the endless boot?

I doubt you would even get that screen if you did the bug. iOS doesn't even boot, you can't do anything. It would just stay stuck and freaking out on the boot screen until the battery is completely dead.
 

C DM

macrumors Sandy Bridge
Oct 17, 2011
51,392
19,461
The phone doesn't turn off. It's in a constant boot state (pretty much an infinite boot loop) because it bugs out and goes into negative time.

The screen being on is enough to kill the battery itself, but it appears it is also doing something which explains why some people say it gets hot if you just let it sit like that. It's trying to figure out the time.

http://blog.lfcameron7.xyz/2016/02/11/1st-jan-1970-64-bit-ios-bug/
So would the screen be constantly on on its own in that state?
 

Bbqthis

macrumors 6502a
Apr 12, 2015
935
1,844
Bay Area, CA
It makes sense since dates in programming (especially in UNIX) are expressed as time since Jan 1 1970, the time stamp for that would be 0. Really is like the Y2K deal...
 

Mesut

macrumors member
Apr 8, 2015
30
15
I doubt you would even get that screen if you did the bug. iOS doesn't even boot, you can't do anything. It would just stay stuck and freaking out on the boot screen until the battery is completely dead.

I have the bug and I'm getting this screen now.
 

lagwagon

Suspended
Oct 12, 2014
3,899
2,759
Calgary, Alberta, Canada
I have the bug and I'm getting this screen now.

Ok, I didn't think the Lightning cable screen would pop up. Whatever you do, do not charge it. Only only fix to the Jan 1, 1970 bug is to reset the PRAM. And the only way to do that is no power whatsoever from the battery. (Physically opening the phone and unplugging the battery, or letting it drain off completely.)

The Lightning cable screen usually only comes on when the battery is super low (like 1%) so hopefully it won't be much longer till yours is drained.
 

jog5000

macrumors newbie
Feb 11, 2016
14
4
Ok, I didn't think the Lightning cable screen would pop up. Whatever you do, do not charge it. Only only fix to the Jan 1, 1970 bug is to reset the PRAM. And the only way to do that is no power whatsoever from the battery. (Physically opening the phone and unplugging the battery, or letting it drain off completely.)

The Lightning cable screen usually only comes on when the battery is super low (like 1%) so hopefully it won't be much longer till yours is drained.

Hi guys.

I also got the lightening cable screen last night. Decided to wait until this morning to see if it did anything - no help. I eventually just opened it up, unplugged the battery for 10 seconds, screwed it all back together, charged it up, and now my phone is 100% good. The battery doesn't drain enough to get that 0 charge it seems...
 
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decafjava

macrumors 603
Feb 7, 2011
5,513
8,024
Geneva
I doubt you would even get that screen if you did the bug. iOS doesn't even boot, you can't do anything. It would just stay stuck and freaking out on the boot screen until the battery is completely dead.

That could damage your battery though no? I understand the software shuts down before the battery is truly drained to prevent deep drains which are harmful to lithium batteries.
 
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b0fh666

macrumors 6502a
Oct 12, 2012
957
786
south
yup, waiting for the batt to fully discharge to the point of wiping the PRAM is pointless. just open it up and disconnect it.

wondering if this affects OSX too.
 
Last edited:
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Jsameds

Suspended
Apr 22, 2008
3,525
7,988
Battery charge decays over time anyway, regardless of whether the device is on or off.

Best solution if you want to drain the battery completely:

- Drain it until it hits the "Please plug me in" screen.
- Keep waking the screen by hitting the power button
- When the battery is low enough that it stops waking the screen, leave the device for a few days

This should *hopefully* do the trick, if draining the battery completely is in fact the solution to this problem.
 

mrex

macrumors 68040
Jul 16, 2014
3,458
1,527
europe
with the battery there is a problem... the device shuts down before the battery is empty. and if you manage to get the battery empty totally, it may not start charging. (you should never let current batteries to be empty totally)
 
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