So I previous owned an S4 and I loved it. I was running a custom ROM as I'm not a huge fan of TouchWiz. I swapped back to an iPhone 5 when iOS 7 came out, just because I like to try new things. I'm pretty bored with iOS again and so I ordered another S4 from Swappa. It should be here Wednesday, but I was reading earlier about recent firmware updates on the AT&T S4. That's when I discovered that a version released in July known as "MF3" basically makes all exploits to bypass the locked bootloader useless. This is a bummer because I always keep my files for rooting, ROMs, etc. As far as I see, the only way to get a ROM other than TouchWiz is through a recovery called SafeStrap. Anyone used this? From what I've read it seems almost like a partition on your device. I've also heard there is no factory image of MF3, so you cannot reserve this process, or even a root. If all this is true, I'd probably be better off selling the S4 as soon as it comes in and spend the extra money on the Google Play Edition. I wasn't that interested in that edition since I was going to use a custom ROM anyway.