, v1.21 typically comes pre-installed on "newer" H1n models. zoomcorp.com Battery Management : Users on platforms like Reddit's videography community
Visit the official Zoom website and navigate to the support section for the H1n. Download the firmware version 1.2.1 to your computer.
Insert the microSD card into your H1n and turn the device on. The update process will automatically begin. Do not interrupt the power during the update.