Apple open downgrade channel is really fake _ Apple downgrade channel how to query _ Apple system downgrade channel query tutorial

Apple has been pushed to the forefront again in recent days. After the iPhone's battery door, the iPhone's speed-down door, and the iPhone's down-clock door, the iPhone battery explosion was once again rumored. I don't know if it is necessary to suppress the heat of the battery explosion. Apple has opened up the downgrade channel and followed Xiaobian to find out.

On January 11, according to foreign media reports, foreign netizens were surprised to find that Apple actually opened up the iOS system downgrade license for multiple mobile phones. Among them, the iPhone models that have been opened include iPhone 4, 5, 6, and 7 models.

The iOS authentication mechanism causes the iPhone to not be downgraded after the upgrade. Many small partners do not like the latest system version after upgrading, but cannot downgrade. Guess the battery event in the previous period, iOS on some models of the iPhone down frequency, causing the iPhone to be stuck, the user pressure, Apple opened the firmware verification! That is to say, the iPhone can be downgraded.

Let's take a look at which iPhone models can be downgraded:

But the good times are not long, the iPhone's downgrade channel opened in less than an hour and was closed urgently. This is to do things. At present, Apple has closed this channel. The reason for this sudden opening of the channel is not clear.

In this downgrade of the open system, many users have been successfully downgraded, and users who did not timely downgrade also expressed great helplessness. They felt that they had been played by Apple.

I have to say that if Apple can really open the downgrade channel of iOS system, it will still save some users' hearts. It is recommended that Apple can refer to it.

How do I view the downgraded version of iOS? Deciding whether each iOS version can be downgraded is important because Apple verifies that the server is down. Normally, when the authentication server corresponding to the iOS version is closed, the version will not be restored. Let's share with you the specific viewing method of whether iOS versions can be downgraded.

1. First, we need to log in to Apple's official iOS version to verify the server interface, and check the running status of the authentication server corresponding to each version. Baidu search "TSSstatus API - Status" selects the first entry.

2. In the open Apple Authentication Server interface, click on the “Firewares” tab to see if the firmware of each version can be downgraded.

3. "Version" represents the version number of the iOS firmware, such as ios7.1.2, etc., "Signing" represents verification, when the value is "YES", it indicates that the verification server is running normally, and its value is "NO", indicating that the verification server is closed. .

4. Here is an example: If you want to downgrade Apple iOS8 to ios7.1.2, you can check the status of the authentication server corresponding to iOS7.1.2 corresponding to the phone model (take iPhone5 as an example), and you will find the “Signed” value. It is "NO".

5. As you can see, the current mobile phone cannot be downgraded from iOS8 to iOS7.1.2 because the authentication server has been shut down and the iOS 7.1.2 system cannot be activated online.