Disconnect the battery for 10 seconds, reinsert it, hold down a specific boot-loader key combination (typically holding the Menu or F1 key while powering on), and attempt to re-flash via the host software.

menu on your device to view the current firmware and serial number. Step-by-Step Update Procedure Download Firmware : Obtain the correct file for your specific model and serial number from the Owon Download Center Prepare the Device Turn on the scope. button and select F2 (System) Navigate to the next page and select Connect to PC Connect the HDS2102S to your computer via USB cable. On the scope, ensure the USB mode is set to (Mass Storage Class). A removable disk should appear on your computer. Transfer File

Hold down the designated boot key combination (usually the F1 or Utility button while pressing Power ) until the screen indicates an upgrade status or stays blank while registering on your PC.

Ensure your Windows computer will not restart or go to sleep during the update. Step-by-Step Firmware Update Process

Wait for the progress bar to reach 100%. The oscilloscope will automatically reboot or prompt you to power cycle it. Method B: USB Disk Mode Upgrade (If Supported by Revision)

The EEVblog community has documented several interesting observations about the HDS2102S:

By following this guide, you can safely perform the in under 15 minutes. Remember the golden rules:

Power it back on. The device will detect the file, perform the upgrade, and shut down automatically once finished.