Here is direct link to download Intex Aqua Ace firmware/flashfile. Version of this firmware is Android Lollipop 5.1. In this download package you will find Firmware, flash tool, driver and flashing guide. Before proceeding to download to download firmware for Intex Aqua Ace, lets chech flashing guide below.
How to Flash Intex Aqua AceStep 1: Download and extract the stock firmware on your computer.
Step 2: After extracting you will find the SP Flash Tool, Driver and instruction manual.
Step 3: Install the USB Drivers (skip if drivers are already installed).
Step 4: Open the SP Flash Tool and load the Scatter File from the firmware folder.
Step 5: Connect your Smartphone to the computer using the USB Driver.
Step 6: Click on Upgrade / Download Button in the SP Flash Tool to Begin the Flashing.
Step 7: Green Ring will appear at the end of successful Flash.