PicoQuant is releasing a free firmware update for several models of its MultiHarp 150 high-throughput multichannel event timers. A major feature of this update is the improvement of the temporal resolution from 10 ps to 5 ps for the MultiHarp 150 4P, 8P and 16P, without affecting other parameters like the data throughput or the system’s dead time. Another new feature the update provides is a programmable input hysteresis for noise suppression in difficult environments. These MultiHarp 150 models are suitable as TCSPC electronics for fast and precise fluorescence lifetime imaging (rapidFLIM) and high throughput multichannel photon correlation.