Use a high-quality USB drive formatted to FAT32 .
You must download all parts (Part 1, Part 2... through Part 12) into the same folder before extracting. Download MICROMAX L40CANVAS Firmware USB part12 rar
Place the extracted .bin or .img file into the root directory (not inside any folder) of the USB. Use a high-quality USB drive formatted to FAT32
Press and hold the Power button on the TV (not the remote) while plugging the power cord back in. Download MICROMAX L40CANVAS Firmware USB part12 rar
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).