iphone4 flashes 7 1 2 error 3194, shsh is not saved, ask for remote guidance 100

The 3194 error is the failure to verify the server signature, usually for several reasons: 1) The hosts file was modified to point to the wrong place. 2) Errors caused by network reasons, such as firewalls, NMS restrictions, GFW, etc.

3) The firmware file version is wrong. Please refer to the official website for instructions.

If you don't have the latest version of iTunes, it is recommended to try upgrading iTunes to the latest version before doing it.

You haven't backed up shsh, and it's the latest version of the system, so it's good to ensure that there is no record in hosts, you may need to restart iTunes and refresh the DNS cache with the computer after the change, if you don't worry, you can ping under the command line to verify that the resolved IP address is not an IP that starts with 17, my side is, the official technical support document is, different regions may resolve different IP addresses, but they should all be addresses starting with 17. If not, it is very likely that the hosts file has not been corrected, or the DNS is polluted, then it will naturally not be able to connect to the Apple signing server. If you confirm that there is no problem with the hosts file, it is recommended to modify the DNS of your computer, or even find a foreign VPN to connect to and upgrade.

If it is your own firmware (not iTunes automatically helps you), please check whether the firmware version is correct, whether it is consistent with your model, such as whether it will be mistaken**4S firmware, or another version of 4 firmware, and check whether the file ** is correct, you can compare the correct MD5 value or re** a new one.

The final solution is to change the computer, change the data cable, and upgrade to another network environment, as long as the machine is fine, it should be fine. You don't necessarily need to upgrade locally, as long as you make a backup on the local machine in advance...

Use the following methods to solve the problem;

Connect iTunes, turn off your iPhone, press and hold the Home button and the Power Off button at the same time for 10 seconds, release the Power Off button, continue to press and hold the Home button until you see the device recognized in DFU state on the computer, after the computer prompts, release the Home button, select the recovery option button on iTunes, and click Confirm Recovery in the pop-up selection box.

3.Next, iTunes will pop up a page prompting that everything will be erased, and it will also verify the recovery with Apple servers, when the verification and extraction of files are completed, iTunes will automatically reinstall the **good firmware version for the iPhone, wait for the installation to be successful, and reactivate the iPhone.

If you don't have a backup, you can only restore to factory settings, which means that there is no jailbreak, and you can re-jailbreak it.

Go straight to it.,There's no way to back up shsh.。

can do it well for you. You can contact me.

You won't get error 3194 if you swipe the latest version, or yes.

If you are flashing the above 2 versions of firmware, and it still reports an error, it means that there is a problem with your computer's network settings.

Then pay attention to see if your machine belongs to the locked version. If there is a lock version, let me talk about the flashing method.

The machine is 09 years 41 weeks ago.,You can brush.,And then perfect jailbreak.,Install the latest version of ultrasn0w and it's OK.

2.If you have a shsh backup, you can downgrade to the version that backed up shsh, for example, or you can jailbreak it perfectly. Then install the latest version of UltraSN0W.

3.It can be officially unlocked, and after unlocking, it is unlocked, and there is no problem that it cannot be activated.