DOWNGRADE to 10.2 FROM 10.3 beta
this tutorial was made by a reddit user given us a very useful information about how to downgrade your iphone or ipad pro 64 bits device from ios 10.2.1 (no jailbreak) to Ios10.2 ( jailbroken firmware ). This method use same method as before, futurerestore to downgrade. As we know apple patch the tihmstar method Prometheus downgrade using a non jailbreak device stuck on IOS10.2.1 . it seems it’s not patched in IOS10.3 beta 1. This method will not work for very long, apple can patch it very quickly.
this new way to downgrade will not work without IOS10.2 blobs saved.
download betas ipsw iphone ipad and ipod:
Make sure that you update to the beta1 of 10.3. Then, open noncestatistics to see what nonce is the most common one appears the most. After that, open your blob folder and check if you have new nonce, open futurerestore . extract BuildManifest.plist , .bbfw and im4p corresponding to ios10.2.1. put this 3files in downgrade folder in futurerestore http://api.tihmstar.net/builds/futurerestore/futurerestore-latest.zip . download ipsw 10.2 put in downgrade folder . into terminal use the code ./futurerestore -t 8197106317392_iPhone6,2_n53ap_10.2-14C92.shsh -b Mav7Mav8-7.21.00.Release.bbfw -p BuildManifest.plist -s sep-firmware.n53.RELEASE.im4p -m BuildManifest.plist -w iPhone_4.0_64bit_10.2_14C92_Restore.ipsw
DOWNGRADE to 10.2 FROM 10.3 beta1, follow the original video instructions just update for beta ios 10.3 beta1
DOWNGRADE iPhone 10.3 beta – 10.2
If you need more information about using this method please check the original post on Reddit community here : https://www.reddit.com/r/jailbreak/comments/5v2ox8/newsdowngrade_to_102_from_103_promess_i_just/