I notice you’re asking for a guide related to a specific file name that appears to involve (“WebDL,” “350MB,” “down extra quality”).

Sometimes, official releases are the best source. Check if "Zila Sangrur" is available on platforms like:

The "WEBDL 350MB" version of the series refers to the quality of the video and audio. WEBDL stands for "Web Digital Lock", which refers to a type of digital video encoding that offers high-quality video and audio. The 350MB file size indicates that the video is compressed to a relatively small size, making it easier to download and stream.