Submitted by Admin on July 22, 2018, 10:48 am PDT 8 172
Specifications and info
Also known as
iPhone 6s A1633, iPhone 6s A1688 CDMA
64bit - Apple A9 APL0898
1.84Ghz Dual-Core Twister
The Apple iPhone 6S has 4 models and variants. Generally the variants are the same device models with some different features and specifications.
3uTools Supports Downgrade iPhone 6s to iOS 10.3.3 from iOS 11
Please customize back up the important data like contacts and photos of your iDevice. You are not suggested to downgrade with data. You could customized restore your backing up data to your iDevice after downgrade.
Step 1. Launch the latest version of 3uTools, and connect your iPhone 6s to your PC. Click Flash & JB -> Easy Flash, 3uTools will automatically match the firmware after you connect.
Step 2. Click firmware iOS 10.3.3 and “Flash”. If you have downloaded the firmware before, just click “Import” -> “Flash”.
Step 3. Keep a good connection between your iDevice and your PC and wait patiently till the process finishes. Your iDevice will reboot if it is successful.
How to Upgrade iDevice Via 3uTools Pro Flash
Step1. Launch 3uTools, connect your iDevice to PC using the USB cable. Make sure iDevice is in DFU mode.
Step2. Keep your iDevice in DFU mode. Click Flash & JB -> Pro Flash -> Import Firmware. Now you need to import the particular firmware you have download previously.
Step3. After it is imported, click Flash. 3uTools will send you reminder that currently the firmware version you selected doesn’t support” Reserve baseband while flashing”. Do you want to continue this operation? Click Yes.
Step4. Wait patiently till the flash process is finished, and your iDevice will restart automatically after flash.