Hi, here is the firmware of Ecoo E04 Plus 3GB.
Firmware: ECOO E04 Plus 3GB MTK6752 Smartphone Android 5.0 Firmware
Passcode: geekbuying.com
These are the Tutorial guides:
Tutorial for the whole process of flashing ROM
Firmware update by USB wire Tutorial
Tutorial and download for SPFT Driver installation
Have a nice day!
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