On this page, you will find the official link to download Croma CRCB2124 Stock Firmware ROM (flash file) from GoogleDrive. Firmware contains firmware file only.
How to Flash
Step 1: Download and extract the stock firmware on your computer.
Step 2: After extracting you will find the Firmware (.zip file).
Step 3: Copy/Mode the zip file to the phone SD.
Step 4: Flash the zip file from the stock recovery.
[*] 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.