Firmware infos :

  build date               : 2018年 12月 13日 星期四 14:57:01 CST
  build description        : x6_v5_x50-user 4.4.2 KOT49H eng.ta.1544684090 test-keys
  build id                 : KOT49H
  build display id         : Hongyue_W106_V43_3G_P20_pro
  platform                 : MT6572
  mediatek version release : Hongyue_W106_V43_3G_P20_pro
  product brand            : alps
  product device           : x6_v5_x50
  product manufacturer     : alps
  product model            : P20 pro
  os version               : 4.4.2

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