Those with jailbroken devices running i OS 8.3 or i OS 8.4 can now unjailbreak without updating or restoring.
With Cydia Impacter, you can restore your device to stock Cydia Impactor version 0.9.15 is currently in beta for i OS 8.3 and i OS 8.4 only.
Unfortunately, in this case, we've only got a locked and disabled i Phone that can only be restored as new via i Tunes. This will be apps, app data, contacts, photos, music and most of everything that resides on your i Phone/i Pad.
ICLOUD TO THE RESCUE May be if you've got i Cloud sync and backup setup, the chances of finding all your app data, photos and contacts in i Cloud are high.
In that case, you can move ahead with the assurance that you can restore your i Device from an i Cloud backup and be up and running with almost everything.
If your i Phone is disabled due to incorrect passcode entry, you can use some other device – may be an i Pad or another i Phone – to check out data that has been synced to your i Cloud account.