How Apple 4s ios8 changes back to ios7

1. Apple's ios8 system is mainly developed for the settings of mobile phones above Apple 5, and it is very stressful to run in 4s.

2. After the Apple system comes out with the new system, there will be a time period for verification, as long as it is within that time period, even if the device is upgraded, it can be lowered and the version can be lowered. Once this port is down, it is not possible to revert to a lower version of the system.

3. Not long after the ios8 system came out, the mobile phone was updated to the latest ios8 system, and before the more advanced system than ios8 came out, you can go to the after-sales service to detect whether it can be downgraded. Or you can try to restore the backup before upgrading the system, but it is not recommended to do it yourself, which is risky.

4. Since the system belongs to the software part, it may be charged to find the after-sales downgrade system, so please pay attention here.

5. Again, it is recommended not to blindly pursue the advanced version, the more advanced the system version, the higher the requirements for the hardware part of the mobile phone, the hardware of the mobile phone does not meet the requirements, there will be pressure to run, and the speed cannot keep up, resulting in the mobile phone will be very stuck; In the case that the mobile phone is not delayed in use, but the running speed is acceptable, it is best not to upgrade the system.

Version verification has been turned off and it is not possible to downgrade users who have already upgraded to ios8 will have to wait for the next version update to fix the bugs they are currently experiencing.

Hello, iPhone4s can be updated to iOS8, but many iPhone4S users report lag after upgrading, it is recommended to wait and see before upgrading.

Basically, iOS8 will make your iPhone 4S slower by more than 50%, and more importantly, in addition to slow startup, another problem will be more uncomfortable, in fact. iPhone4S will have some lag phenomenon when running iOS7, especially many special effects are not very smooth, iOS8 is even worse, animation effects will drop frames will be very powerful, such as opening a new tab in the Safari browser, or even clicking to send a text message, it will make you stuck and unable to move.

The iPhone 4S is Apple's last phone to use an inch screen. It was big then, but now it's small, and it can't accommodate a large number of apps and settings optimized for large screens, including prediction input, mail sorting, notification center widgets, Spotlight search suggestions, and more.

Yes, OTA upgrades or upgrades via iTunes are acceptable.

I can't restore it.,Apple has stopped verifying the following systems.,So let's continue to use it.。

Due to server authentication issues, you cannot downgrade to ios7 after upgrading to ios8

1. Make a backup of your personal data first, such as **, address book.

3. Then select again.

4. After all the tools are ready, because it is from the high version to the lower version, it has to be let first.

iphone

Enter recovery mode. Put it first.

iphone

Connect it with your computer and turn it on.

itunes

Software. 5. Then please press and hold the power button, when the shutdown option appears, please slide to power off.

6. Then please follow the following method to let.

iphone

Enter recovery mode: Then press the power button again to turn on the computer, the Apple logo will appear on the screen, do not release the power button; Then press and hold the Home screen again.

home button until the screen goes black; When the screen goes black, release the power button and continue to press and hold the home screen.

Do not release the home button until it is on the computer.

itunes

A recovery mode has been detected.

iphone。

7. Followed by please.

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window first press on the computer keyboard.

shfit key (widows system) do not put or.

Alt key (Mac) and then click on "Recover."

firmware file.

10. Please wait next.

itunes

Payouts. ios7

11. If all goes well, you can put it.

iOS8 downgrade back.

firmware system too.