” Recently,many users can’t wait to update their i Phone 7/6s/6/SE/5s to i OS 11, or i OS 10.3, for jailbroken i Phone,you must to install i OS 10 without data loss using IPSW Files(Firmware Update),otherwise,you will update failure and cause delete data.As i OS users know, DFU mode is short for Development Firmware Upgrade, which means to upgrade or downgrade i Phone firmware manually.This well-known powerful i OS 10 Data Recovery tool provides three simple ways to restore lost or deleted pictures from i Phone 7/7 Plus/6s/6s Plus, i Phone 6/6 plus, i Phone SE with i OS 11, i OS 10.3 ( i OS 9.3.5/ i OS 9.3.4/ i OS 9 is included), as well as contacts, i Messages, SMS, message attachments, Whats App messages, call history, reminders, notes, calendar, safari bookmarks, app documents, media files and more no matter you have backup or not.
In the i Cloud Settings, choose Backup and then tap the "Back Up Now" link on the resulting page.
The fail safe to something happening during an update is restoring the i Pad to its factory default state, which isn't a major issue so long as you have that backup.
You can perform a manual backup by opening the i Pad's settings app.
We've also heard that people are seeing a number of errors when trying to download i OS 10, so we will address them below - but we still think the best solution is to download via i Tunes.
For most queries related to the i OS 10 update process, your first port of call should be our i OS update guide.