Let the device warm up for 10–15 minutes, disconnect all probes from the input channels, and run the Self-Cal routine from the Utility menu. This ensures that the newly installed firmware maps the analog-to-digital converters (ADCs) correctly for precise measurements.
: Press System -> F4 (Page 2) -> USB and set it to MSC .
OWON provides firmware updates via a .UPD file on their website. Out of curiosity, I ran binwalk on the latest version (v1.0.6 as of this writing): owon hds242 firmware
: Firmware is often locked to specific serial number ranges or hardware builds (e.g., V1, V2, V3). Installing firmware meant for a different hardware revision can result in serious issues, such as an upside-down display .
: Firmware versions are only compatible with a certain range of serial numbers . Installing an incompatible version can brick the device. One EEVblog user noted: “My scope was bought before summer, shipped with version 1.6.0 and the newest supported firmware is 1.7.0, even though they now ship version 4.x”. This suggests that later hardware revisions require different firmware branches. Let the device warm up for 10–15 minutes,
Click the or Start button in the PC software. A progress bar will indicate the transfer status. Do not touch the cable, device, or close the software during this time. The process typically takes between 1 to 3 minutes. Once completed, the software will display a "Success" message, and the HDS242 will automatically reboot into its normal operating mode. Troubleshooting Common Issues
New Features: Often adds measurement types or improved FFT analysis. OWON provides firmware updates via a
It worked flawlessly.
Joon let out a breath he didn't know he was holding. He disconnected the USB cable and screwed the back panel of the oscilloscope back on. He replaced the rubber feet, pressing them down firmly.
Click or Start . Do not touch the cable or turn off the device until the progress bar reaches 100% and indicates a successful transfer.
Get it onGoogle Play