I saw this on TV in the 1970s. American TV, English language, likely color. There was a heist of something valuable locked in a metal vault room. Possibly motion detectors throughout the room. The thief used magnetic boots to walk upside down on the metal ceiling, then lowered himself down to steal the object.

I think in the same movie, something was hidden by thieves in the ceiling of their apartment. The thief said, “no one looks up.” When police searched, they did not find the hidden object because they did not look up.