I would beware of flashing new firmware. From looking at your bootloader. This is your first update (radio looks old) and from what I have read people not on 3.15 firmware are bricking their phone's. I would strongly suggest you do more research before proceeding. Especially based on earlier posts.
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If you flash 3.15 first then flash 3.16 you should be ok that's what Captain_Throwback posted on the firmware thread
Sent from my PoS MoPho