I share here Samsung Galaxy Trend Plus GT-S7580L Firmware Flash File from Google Drive. You can easily download this and flash your smartphone!
Download Firmware For Samsung GT-S7580L:

How to Flash Samsung GT-S7580L Smartphone:
- Download the stock firmware and extract it on your computer.
- Download and install Odin v3.12.5 or any latest version.
- Now open Odin 3.12.5 or any latest version.
- Before connects with the computer restart your smartphone in Download Mode by pressing the Home+Power+Volume Down buttons.
- Now, Connect your device to the computer and wait some time for getting a blue sign in Odin.
- Now, Using the AP / PDA button to add the firmware file in Odin.
- Now, Make sure the re-partition is NOT clicked before starting the flashing process.
- Ultimately, Click on the start button and wait few minutes to get the flashing process finished.