1st time: Korean with English subtitles. 2nd time: Korean with Hindi subtitles. 3rd time: Dual Audio (Korean primary, Hindi secondary for lazy viewing).
Instead of risky downloads, you can find high-quality versions on official platforms: download oldboy 2003 dual audio hindikorean best
Given that the search for a specific download oldboy 2003 dual audio hindikorean best copy does not immediately yield direct, high-quality sources, here are two alternative paths: 1st time: Korean with English subtitles