iphone4s can also downgrade from ios8 to TAT

Hello and thank you for your trust. At present, the system verification below ios8 has been turned off, and the version that has been closed for verification by Apple will no longer support users to flash to this version, and you can only upgrade up and not downgrade.

Apple's upgrade and flash rules are very clear,Because iOS needs to be connected to Apple's server when flashing,Once the verification of the version is closed,Then you flash the version again,You can't flash it,It will report an error。

What you can do now is to slowly get used to iOS 8.

1. Apple's 4S mobile phone wants to be downgraded, but within the specified time period, as long as the device is upgraded, it can be downgraded and the version. Once this port is down, it is not possible to revert to a lower version of the system.

2. 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.

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

4. 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.

No! Unless you dream of Jobs!

Just back up in iTunes, 712 is not off?

In fact, it is possible to downgrade now. The name of the tool is Odysseusota, and to downgrade with this tool, iPhone4s needs to be jailbroken.

1. Preparations:

1. **Toolkit, unzip it in any location, then open the unnamed folder 3, copy the folder under this folder to the iDeviceRestore for Windows folder, and copy the entire iDeviceRestore for Windows folder to the root directory of the C drive.

2. Install win32openssl-1 0.

3. Installation. & Install the latest version of iTunes.

2. Connect your phone with wifi.

1. Open Winsc, turn on WiFi, tap the wireless LAN of your iPhone, click the blue i icon, and remember the first IP address.

2. Enter the IP address of the host.

3. Username root, password alpine, file protocol scp, click to log in.

3. Prepare documents.

Find your kloader and pwnedibss files, select them, and drag them to the window on the right.

Fourth, enter DFU mode.

1. Ctrl+T to open the terminal.

2. Enter chmod +x kloader and click execute.

3. Input. kloader pwnedibss, click execute, at this time the iphone screen is black, turn off winscp. (At this time, an error is displayed, so turn it off directly).

5. De-escalation begins.

1. Connect your mobile phone to the computer with a data cable.

2. win+r to call out the run box, enter cmd to open the command prompt.

3. Enter "cd" and press enter.

4. Type "CD iDeviceRestore for Windows" and press Enter.

5. Enter "space-e-space" to pay attention to space), and then press enter.

6. Wait for the command to finish walking, and it's OK.

Can't downgrade anymore, Apple has turned off the system certification below ios9. That is to say, if you downgrade, you can't activate it.

Jailbreak can, recommend the flashing tool itools, thank you.