so i have managed to turn my iphone 4 back to ios 6.1.3 tethered jailbreak because i wanna restore my phone back to that firmware but i didnt have SHSH blobs and its worked im on 6.1.3 jailbroken but i want to restore to 6.1.3 original firmware so i can re jailbreak it and make it untethered, can anyone help me i dont have any shsh blobs apart from the tethered one i just made and i dont know if that one works please help!