Below is the direct link to download the Lyf Water 1 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 Firmware, Driver and Tool.
Step 3: Install the USB Drivers (skip if drivers are already installed).
Step 4: Connect your Device to the Computer.
Step 5: Now Launch Qualcomm Flash Image Loader (QFIL) from the Firmware Folder and load the firmware from firmware folder.
Step 6: Now, Click on Download Button to begin the Downloading Process.
[*] 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.