: Insert the SD card or connect the USB drive to your Owon HDS2102S.

You can generally only update within your current major version number (e.g., V4.x.x to V4.y.y). Do not attempt to jump between major versions like V1 to V4 unless explicitly instructed by Owon support. 2. Download the Firmware owon hds2102s firmware update

In earlier versions, there was a discrepancy where the screen graticules were not spaced correctly for the 2ns/div timebase. For example, a 50 MHz signal (which has a 20ns period) would incorrectly appear to take up 8 divisions instead of the correct 10 divisions. The Solution: : Insert the SD card or connect the