Is it possible to tell if a unjailbroken phone has been jailbroken in the past? I heard that a phone can be jailbroken and then "un-jailbroken." Is it possible to tell if an "un-jailbroken" phone has been jailbroken in the past?
Will an iOS reinstall make a jailbroken iOS device "unjailbroken" and “supported by Apple” again? Will an    Work on any jailbroken-iPhone and Make a jailbroken-iPhone "unjailbroken"? Make a jailbroken-iPhone "supported by Apple"?   Similarly, does such an iOS reinstall reset the iPhone (jailbroken or not) back to a "clean, factory default" state?  My near-term purpose: I have an iPhone 4S running iOS 5.1 I'd like to jailbreak to at least install better Google Voice integration like .
What happens if my ESTA expires on the day of arrival? How does one write on the outside of a circle?  I am looking for sample files/packages which imitate a magazine lay-out. Specifically a page with two columns having a circular picture between the two columns.    Example of the desired layout, created using Word: I've been told that when "the" is proceeded by a vowel sound, like "apple" or "hour", it's pronounced as "thee" and not as "thu".  But after listening to a couple of songs, I noticed that sometimes this "rule" is not followed. Take for example the two Katy Perry's songs, "Roar" and "The one that got away". In the first she sings "I got thee eye of thu tiger", but in the second she sings "Thu one that got away".  I don't know if it was sang this way to better suit the song melody (I understand nothing about those techniques), but I got confused. What's the correct pronunciation?  Thanks in advance. How to insert page number in Beamer navigation symbols? Divergent infinite series $n!e^n/n^n$ - simpler proof of divergence? Filling cells with sequential numbers in an Excel (2003) macro I need to fill an excel column with a sequential series, in this case from -500 to 1000.  I've got a macro to do it, but it takes a lot of lines for something that seems like it should be a single function [something like FillRange(A2:A1502, -500, 1000, 1)].  But if that function exists, I can't find it.  Is the following as simple and elegant as it gets?  'Draw X axis scale Cells(1, 1).Value = "mV" Cells(2, 1).Value = -500 Cells(3, 1).Value = -499 Cells(4, 1).Value = -498  Dim selection1 As Range, selection2 As Range  Set selection1 = Sheet1.Range("A2:A4") Set selection2 = Sheet1.Range("A2:A1502")  selection1.AutoFill Destination:=selection2 Compute the limit of $\sqrt{1-a}\sum\limits_{n=0}^{+\infty} a^{n^2}$ when $a\to1^-$ I need some suggestions, hints for the limit when $a \to 1^{-}$ of $$\sqrt{\,1 - a\,}\,\sum_{n = 0}^{\infty}a^{n^{2}}.$$ Relative pronouns "where" and "when": where can they be omitted? Prove that even + odd is odd. Prove that a even number + odd number = odd number  Let $x$ be the even number, let $y$ be the odd number.   From the definition of odd numbers, $y + 1$ is even.   Let:  $$x + y = z$$  Suppose $z$ is even.   $$x + y = z$$  It follows that:  $$x = x + y - y = z - y$$  But I cant think of any other contradiction here. The issue is with the assumption I suppose. Any help is appreciated! Is "po-TAH-to" an acceptable pronunciation for "potato"? Immortalized in the George and Ira Gershwin song "Let's Call the Whole Thing Off" is the nitpicking of pronunciation differences:      You like potato and I like potahto,   You like tomato and I like tomahto,   Potato, potahto, tomato, tomahto!   According to  and other sources, the English do pronounce tomato as tə-MAH-toh rather than tə-MAY-toh. But this doesn't seem to be the case when it comes to potato.     (From the O.E.D.)           –  Pronunciation: /təˈmɑːtəʊ/     –  Pronunciation: /pəˈteɪtəʊ/   Is "potahto" actually an acceptable way to pronounce potato? Or is the song just wrong? Does the  tag position in HTML affects performance of the webpage? Create WiFi hotspot on ubuntu Although many questions have already been asked regarding WiFi hotspot, I didn't get any of the solutions working for me.  I connect to the Internet using a 3G Dongle of Huawei 3772 (Vodafone). The connection type is Mobile Broadband connection. I have to share this Internet connection with my other devices like mobile phones and laptops.  How can I create a WiFi hotspot connection for this connection.  I am using Ubuntu 12.04 LTS.  I would like to note that I have already tried some help links from Ubuntu but, they are so confusing that I could not understand them. No connection could be made because the target machine actively refused it (PHP / WAMP) How to get rights of admin after I disabled all admin accounts in my computer I have been attempting to use identities to get to the answer but I am unable to get anywhere. Here is the equation I am trying to prove tautological without using truth tables:  $[(p\rightarrow q) \land (q \rightarrow r)] \rightarrow (p \rightarrow r )$  And here is my attempt at using identities to work my way up. (a link to a page with a table of logical equivalence identities: )  $\lnot [(p \rightarrow q) \land (q \rightarrow r)] \lor (p \rightarrow r)$  $\lnot [(\lnot p \lor q) \land (q \rightarrow r)] \lor (p \rightarrow r)$  $[\lnot (\lnot p \lor q) \land \lnot (q \rightarrow r)] \lor (p \rightarrow r)$  $[(p\land \lnot q) \land (q \land \lnot r)] \lor (p \rightarrow r)$  I don't know where to go from there. Generating x,y coordinates for an edge detection of image Accepted way to abbreviate cities that have "Saint" in their name My first question here, so I'm not sure if this OT or not, so please bare with me.  Background: I don't live in US. I'm working with some data that I'm pulling from . Sometimes, I'm getting a city name as St. John and sometimes as Saint Ann.   So my question is, is there an accepted way on how people write a US city names which starts with Saint or is this just some random thing (or just specific to AdWords maybe)?  I'm asking this, because if for example I'll get both St. John and Saint John in the same file, should I consider them the same or should I be suspicious? Folders Completely Hidden Except via Save As I'm using an audio program called Supercollider on Windows 10. I have saved some files in a folder called "tunes" from SC via Save As, but Windows Explorer and CMD both seem unable to recognise access or recognise the "tunes" folder.  C:\Users\HP&gt;cd "C:\Program Files (x86)\SuperCollider-3.7.2\supercollider-robin\tunes" The system cannot find the path specified.  C:\Program Files (x86)\SuperCollider-3.7.2\supercollider-robin&gt;dir/a doesn't show it either.  However, when saving from SC with Save As, it's there clear as day. I can even shift+right-click to get the path: "C:\Program Files (x86)\SuperCollider-3.7.2\supercollider-robin\tunes"  This makes no sense to me. Can anyone explain and tell me how to access my folder tunes folder please? sed fails with "unknown option to `s'" error Matrices that commute with all matrices