Here is a stock ROM, MTK Backup for G-Tide S4 which is also known as G-Tide S-4.
With this G-Tide S4 flash file, you can flash stock ROM back to your G-Tide S4 using SP Flash Tool. This is mostly required when you have software issues with your G-Tide android devices, and in most cases, flashing stock ROM on G-Tide android devices corrects all software errors if you know how to do it.
Below here is the download link for the stock ROM. You may also see the tutorial page on how to flash stock ROM on G-Tide and other MTK android devices below.
G-Tide S4, S4 Stock ROM Download Details:
ROM Size: -
S4 Stock ROM Download Link: Download G-Tide S4 ROM Here
Tutorials for Flashing Stock ROM On G-Tide S4
How to Flash Stock ROM on G-Tide and other MTK Android Devices Here
Video Tutorial On How to Flash MTK Android
Source: List of All G-Tide Android Device Stock ROM and Flash Files