Hi, I had a previously jailbroken iphone 4s running ios 8.3. I was getting it ready to give to my father, as I just bought a iphone 6s. I restored the iphone from settings, to preserve the ios 8.3, because ios 9 is dreadfully slow on an iphone 4s. However, when I restored the device from settings, it went as normal, but wont boot past the apple logo. I tried to dump the shsh blobs for it using tinyumbrella and redsn0w but neither worked. I need the shsh because The only way I can see to recover the phone is to upgrade to ios 9.0.2, then downgrade back to 8.3. I really dont know much about this part of the jailbreaking scene so any help is much appreciated.