This fix requires patience and a second computer. We will execute a using a hidden bootloader menu and a properly prepared USB drive.
Remove the 18650 batteries for 5 minutes to completely drain the capacitors. Re-insert the batteries, hold down the bootloader key combination, and attempt the flash process again with an older, stable version of the firmware. Scope Channels Out of Calibration Post-Update owon hds2102s firmware update fix
Before you attempt any firmware update, you must check your current version number. To view this information: This fix requires patience and a second computer
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 Re-insert the batteries, hold down the bootloader key
Sometimes, the firmware update might fail, or the device might not behave as expected after an update.
The OWON HDS2102S is an excellent handheld oscilloscope with impressive specifications—100 MHz bandwidth, 500 Msps sampling rate, built-in DMM, and an arbitrary waveform generator. However, its firmware ecosystem has significant fragmentation across different hardware revisions.