Below is the direct link to download the Datawind UbiSlate 7C Plus GPRS Stock Firmware (flash file) from GoogleDrive. Firmware contains Flash Tool, Driver and instructions.
How to Flash
Step 1: Download and extract the stock firmware on your computer.
Step 2: After extracting you will find the livesuit Tool, Driver and instruction manual.
Step 3: Install the USB Drivers (skip if drivers are already installed).
Step 4: Open the livesuit Tool and load the firmware 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 livesuit Tool to Begin the Flashing.
[*] Take a Backup of your personal data before flashing or installing the firmware on your smartphone. As this helps you to recover the personal data whenever any thing wrong happens.