Don't do it! My S6 Edge went into a boot loop a week or so ago, right as I was leaving on a trip. I tried all the common "fixes" at the T-Mobile shop, and they directed me to the Samsung shop at BestBuy. I wound up having the phone reflashed (twice), and when that didn't work they told me it must be a hardware problem, and that I'd need to call Samsung and schedule a repair. I called Samsung today, and they told me that as the phone is (just) outside the 1 yr warranty period, they will not repair it. "At this time", the guy said, "we're not accepting repairs for out of warranty phones". And so now I'm the owner of an $800 shiny black brick that's 15 months old. After my last crappy Samsung a couple years ago I swore "never again". Now I mean it.
Paul