: Press Utility -> System -> USBDevice and set it to Computer .
Avoid using the cheapest charging cables. Use a high-quality USB-C data cable.
Before attempting an update, you must identify your current firmware series. Owon uses different hardware revisions that are cross-compatible:
and later) address several key usability and technical issues: Timebase Scaling Fix : Corrects a significant display discrepancy in the owon hds2102s firmware update fix
Ensure your oscilloscope USB setting is explicitly set to Mass Storage . If it still fails, open Windows Device Manager, uninstall the unknown USB device, unplug the cable, and plug it back in.
Changing firmware resets internal voltage offsets. Disconnect all probes from the inputs, go to the system menu, and select Self-Cal . Let it run to completion to ensure measurement accuracy.
A fully charged Owon HDS2102S (do not update on a low battery). A reliable USB-C to USB-A cable (avoid loose ports). A Windows PC. Step-by-Step Installation : Press Utility -> System -> USBDevice and
is relatively simple. The device acts as a USB storage device, making it straightforward to copy the new firmware file over. Step 1: Check Your Current Version
Updating your device's firmware resolves these stability issues. However, many users encounter a critical problem after flashing: a corrupted calibration state that causes inaccurate voltage readings or broken offsets.
Before attempting any update, it's critical to recognize that the HDS2102S has evolved through several hardware revisions. This means there isn't a single universal firmware file for the model. A frequent point of confusion highlighted in user forums is the firmware versioning system, where "The number after the letter V is your main version number... if you have V4.x.x. then you can only update to the one that starts like this. The V1.5.1. and the V2.0.4. not good for you". Before attempting an update, you must identify your
Firmware version V1.5.1 (and later) corrected this scaling issue. After the update, a 50 MHz signal correctly occupies five divisions for a half-cycle (10ns), resulting in an accurate 20ns full-cycle reading. Critical Warning: Check Your Hardware Revision First
If the update fails or the device acts abnormally, try these troubleshooting steps: