Hi, the new stock firmware for JWD S4(max) 6.0 Inch IPS HD Screen MTK6589 Smart Phone.
Download Link:JWD S4 version 1.1.
Flash Tool Download Link:SP-Flash-TOOL-V3.
Please drive it before you reflash it. You can use the driver tools which all the MTK 65XX can be used.There is the download address: MTK 65XX Driver (Password: geekbuying.com).
The same method as THL W8S’s as follows: