DESCRIPTION

readed from the phone with miracle crack 
it is not tested, flash it at your own risk or take back-up before flash.

  Waiting for USB Port…
  Set MediaTek PreLoader USB VCOM Port (COM6)
  Please Hold "ON" to connect with the phone…
  Connected to Phone.
  CPU: MT6735 SW:0000 Ver: CB00
  Downloading Boot8 …
  EMMC Size: 0x03A3E00000
  Flash Type: EMMC
  INT/EXT RAM  Size: 0×0+0×0
  Reading infr(EMMC)…
  id:ECHO_STELLAR_4G_V04_20170711
  version:7.0
  model:Stellar 4G
  brand:ECHO
  manufacturer:ECHO
  PROINFO  BaseAddr:0×80000  Size:0×300000
  NVRAM  BaseAddr:0×380000  Size:0×500000
  PROTECT1  BaseAddr:0×880000  Size:0xA00000
  PROTECT2  BaseAddr:0×1280000  Size:0xA00000
  LK  BaseAddr:0x1C80000  Size:0×80000
  PARA  BaseAddr:0x1D00000  Size:0×80000
  BOOT  BaseAddr:0x1D80000  Size:0×1000000
  RECOVERY  BaseAddr:0x2D80000  Size:0×1000000
  LOGO  BaseAddr:0x3D80000  Size:0×800000
  EXPDB  BaseAddr:0×4580000  Size:0xA00000
  SECCFG  BaseAddr:0x4F80000  Size:0×80000
  OEMKEYSTORE  BaseAddr:0×5000000  Size:0×200000
  SECRO  BaseAddr:0×5200000  Size:0×600000
  KEYSTORE  BaseAddr:0×5800000  Size:0×800000
  TEE1  BaseAddr:0×6000000  Size:0×500000
  TEE2  BaseAddr:0×6500000  Size:0×500000
  FRP  BaseAddr:0x6A00000  Size:0×100000
  NVDATA  BaseAddr:0x6B00000  Size:0×2000000
  METADATA  BaseAddr:0x8B00000  Size:0×2500000
  SYSTEM  BaseAddr:0xB000000  Size:0xAC800000
  CACHE  BaseAddr:0xB7800000  Size:0×19000000
  USERDATA  BaseAddr:0xD0800000  Size:0x2D2580000
  FLASHINFO  BaseAddr:0x3A2D80000  Size:0×1000000
>>Done.

※Please make a backup of your device before installing or updating ROM