iPhone iOS 10 beta1 has just been released, so you could probably meet with, it probably exist some problems in experiencing the new generation iOS system, for example, a lower system stability, a faster power consumption, lacking smoothness, being incompataible with some Apps and etc.
Step 1. Download the latest version of 3uTools and connect your iPhone to PC using the USB cable.
Step 2. After your iPhone is connected to 3uTools(PC version), please click “Flash Jailbreak”→“Easy Flash”.
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If you want to view more details , please click here: http://www.3u.com/tutorial/articles/how ... 10-to-ios9