The following message is going to specify the 2 methods for you in 2 parts.Note: Do not disconnect your i Pod touch to the computer until the update is finished.
"Can I restore my i Phone 6s without updating to i OS 11?Select i OS 11/10/9 Firmware Files and Download to i Phone Tips: The program provides i OS 10.3.3 and the newest i OS 11 official version firmware package for download.1)If you want to install i OS 10 on your i Phone directly,please click the “Download” button to download the i OS 10.3.3 firmware files for your i Phone.The manually one is to download & install i OS IPSW file on i Phone/i Pad with i Tunes,it’s easy to complete the restoring task via i Tunes on device. Open Device Summary for the i OS device you are updating. Hold down the SHIFT [ Windows ] or ALT [ Mac ] key and click Restore in i Tunes simultaneously i Tunes restore. Locate the i OS IPSW file you downloaded and select it. Follow the on onscreen instructions and i Tunes will begin the update process. When the update has finished, your i OS device will reboot into the i OS you select. IPSW files: i OS firmware file for i Phone i OS firmware file for i Pad i OS firmware file for i Pod touch Another better way to use IPSW file to restore i Phone/i Pad without i Tunes is install IPSW file on device via IPSW Files Installation Tools or IPSW Restore Tool – i OS System Recovery.However,it gain the big chance to lost data from device after using IPSW file to restore the jailbroken i Phone/i Pad with i Tunes. No matter the jailbroken or non-jailbroken i Device,it will not lead to data loss in the whole restoring process.