The Mtech 8803 is a feature phone that was released several years ago. Firmware updates are typically provided by the manufacturer to fix bugs, add new features, or improve performance.
You're looking for a firmware for the Mtech 8803. After conducting a search, I found some information that may be helpful. Please note that I'm providing general guidance, and you should exercise caution when working with firmware and modifying your device.
If you're writing a paper on the Mtech 8803 firmware, here's a suggested outline: