this firmware tested for unbrick dead devices after flash 

Firmware infos:

 Build ID: NRD90M
 Display ID: V4+_V04_20180313
 Version: 7.0
 Build Date: Tue Mar 13 16:27:36 CST 2018
 Model: V4+
 Brand: EVERTEK
 Device: V4_Plus
 Manufacturer: Fortune Ship
 Mediatek Version Release: alps-mp-n0.mp1-V1.0.2_len6737m.35.n_P192

Download:

V4+_V04_20180313_162605.rar

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