Flash stock PD2 & Null Imei, Unknow Baseband -- Help me, please!

:( Then i flash stock via odin, my phone was unknow baseband & null imei.
My phone auto reboot about 20s/times.
i was flash stock old & new but not fixed :(
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Then flash stock OI6 then logo boot "Samsung Galaxy S6e+" change "Samsung Galaxy S6" :(

How to my phone come back?
Help me, bros~~~

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