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iPhone6s downgrade operation detailed explanation iPhone6s is Chemical industry HS code searcha smartphone launched by Apple in 2015, according to the number released by AppleAccording to the report, iPhone6s has been the best-selling mobile phone since its release in 2015. However, over time, some users began to find that their iPhone6s did not perform well after upgrading to the latest version of the iOS system, including flashback, stuttering, fast battery consumption and other problems, which makes some users want to downgrade their iPhone6s back to the previous iOS. System version to get a better user experience. This article will introduce the detailed operation steps of iPhone6s downgrading. Step 1: Backup data. Before downgrading iPhone6s, the first step must be done is to back up the data. During the downgrade process, the data of the entire device will be emptied, so be sure to back up all the data that needs to be kept in advance, including photos, contacts, text messages, applications, etc.You can back up through iTunes or iCloud, and you can proceed to the next step after the backup is completed. Step 2: Download the old version of the iOS system. After the backup data is completed, you need to download the required iOS system. Search "iPhone6s old version iOS download" on the Internet, and you can find many websites that provide iOS system downloads. Please note that do not download unverified iOS systems to avoid virus attacks or other risks. Step 3: Enter DFU Mode Entering DFU Mode is a key step for downgrading. DFU Mode is a special mode that allows iPhone6s to connect to iTunes to update or restore the system. The specific steps are as follows: 1. Connect the iPhone6s to the computer via USB cable.Two. Press and hold the Home button and the Power key. Release the Power key after the Apple logo is displayed on the screen, but you need to continue to press the Home button. 3. The screen will turn black, and then the prompt "Connect to iTunes" will appear, which means that you have successfully entered DFU Mode. Step 4: After opening iTunes and entering DFU Mode, you need to open iTunes and wait for it to detect the device. After the device is detected, a message will pop up in iTunes, prompting the user that "a device has been found to enter recovery mode". Step 5: Downgrade. Before the downgrade starts, please select the iOS version you want to restore in iTunes according to the prompts, and then click the "Restore" button. In the selectionAfter the iOS version to be restored, iTunes will begin to download and install that version of the iOS system. This process will take some time. Please wait patiently until it is completed. Step 6: Complete the downgrade operation. When the downgrade operation is completed, the device will automatically restart and the Apple logo will be displayed on the screen. At this time, users need to make some basic settings on the device, including selecting language and region, activating iCloud, etc. After completing these settings, users can restore according to the previously backed up data and re-enjoy the various functions of iPhone6s on the new iOS system. In summary, although the downgrade of iPhone6s is very simple, it still requires certain skills and patience during the operation process. If you want to return your iPhone6s to the previous version, you can follow the steps above.However, please note that you must back up all data in advance before downgrading, and carefully choose the downgraded version of iOS to avoid unnecessary risks.

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