I have an iphone 4,I am on 6.0.1 jailbroken but my battery can't even make through the day,my shsh files for 6.1.2 are broken thanks to Saurik and I want to update to 6.1.3 and tether jailbreak.I want to know,is there any difference between tethered and untethered,besides that I have to connect my iphone to computer and boot,are there any slowdowns on tethered or any other problems?I can jailbreak with snowbreeze,it supports 6.1.3.