Hi guys, I'm new to this forum and to this community as well. Here is my dilemma: I have a 16GB neverlocked iPhone 4 with iOS 4.1 on it and i want to upgrade it to 6.1.2, as i know iOS 7 is not that great on my other iPhone 4. I'm not so good with installing/modifying Apple software, so i called for help and will meet a guy (which i do not know) this evening that will put me the 6.1.2 on it. My questions are: Is it safe to make the update from his computer? (he's got a Mac) Or is it safer to make the update from my computer? (which has a Windows 8) By safe, i mean if he can access my phone after that or access from his computer some personal data. He can do something with those SHSHs? And another question: Does it make a difference if i update my iPhone 4 from a Mac or from a Windows? I mean, will the phone work better if i would make the update from a Mac? I am waiting for a response from you guys, thank you very much in advance! Cheers!