With the TV off, insert the USB into the TV's service/USB port.
Large firmware files are often split into smaller "Parts" (e.g., Part 1 to Part 12) for easier uploading and downloading on file-sharing sites. .rar (Requires WinRAR or 7-Zip to extract). Download MICROMAX L40CANVAS Firmware USB part12 rar
The TV should show an "Upgrading" or "Software Updating" screen. Do not turn off the power during this process. With the TV off, insert the USB into
Use a high-quality USB drive formatted to FAT32 . The TV should show an "Upgrading" or "Software
Place the extracted .bin or .img file into the root directory (not inside any folder) of the USB.
⚠️ Installing the wrong firmware can permanently brick your TV. Ensure the model number on the back of your unit exactly matches 40CANVAS-S before proceeding. Procedure for update | Download | Digital Camera
You must download all parts (Part 1, Part 2... through Part 12) into the same folder before extracting.