Before fixing the problem, you must understand the root causes. The HDS2102S uses a specific bootloader protocol. Unlike modern plug-and-play devices, this oscilloscope requires strict adherence to file naming conventions, SD card formatting, and power stability.
If the SD card method above does not work (i.e., the screen remains completely black), your bootloader is corrupted. You need a hardware fix using USB and a jumper.
Warning: This requires opening the casing, which voids your warranty.
We observed three primary failure modes:
5.1 Bootloader Entry Failure
5.2 Partial Flash Corruption (Bootloop)
5.3 Incompatible Firmware / Version Mismatch
Root causes:
Firmware update failures in the Owon HDS2102S are recoverable in most cases using noninvasive SD card or USB updater workflows if the correct image and trigger method are known. For more severe corruption, serial bootloader access or direct flash rewriting can restore functionality. Manufacturer-side changes (atomic updates, documented recovery) would significantly reduce user risk. owon hds2102s firmware update fix
Contact OWON support with:
OWON Support (Europe/US/Asia) – refer to official website for regional contact.
As a last resort, an external programmer (JTAG/SWD) and full NAND flash re‑image may be required – this should only be attempted by experienced electronics repair technicians.
If you have attempted the SD card rescue (Part 2) and the USB DFU rescue (Part 3), yet the device still only shows a dim backlight, the SPI flash memory chip (Winbond W25Q64) may have physically failed. OWON uses a consumer-grade flash chip that can die after about 10,000 write cycles. One corrupted update can fry the first sector.
In this case, the "fix" is a hardware rework: Desolder the old flash chip, program a new one with a universal programmer (TL866II Plus), and re-solder it. This is a $50 fix at a repair shop versus buying a new $350 scope.
Final Verdict: The OWON HDS2102S is a capable device let down by fragile update infrastructure. By following the forced recovery steps outlined above, you can fix 90% of "bricked" units. Remember: Format FAT32, use the F1 key trick, and never, ever unplug during write.
Have you successfully fixed your HDS2102S? Share your OS version and the specific error message in the comments below to help the next engineer facing the "owon hds2102s firmware update fix" nightmare.
Updating the Owon HDS2102S Go to product viewer dialog for this item. Before fixing the problem, you must understand the
firmware is a critical fix for a known bug where the 2ns/div horizontal setting incorrectly displays waveforms (effectively acting as 2.5ns/div). 🛠️ Update Process
Follow these steps to apply the fix using the Mass Storage Class (MSC) method: Check Hardware Compatibility
Navigate to System > F2 (System) > Next Page to view your current version.
Warning: Firmware is serial-number specific. Do not attempt to flash if your device uses a read-only Gigadevice flash chip (often identified by "NOT upgradable" status in community archives). Download Firmware
Visit the Owon Download Center to find the correct .upp file for your model and serial range. Prepare the Device Connect the scope to your PC via USB. Go to System > Next Page and set USB to MSC.
The device will appear as a removable disk on your computer. Flash the Fix Copy the Scope.upp file to the root of the removable disk. Power the scope OFF and then ON.
The device will automatically upgrade and shut down when finished. ⚠️ Important Fixes & Risks
2ns/div Accuracy: Updating to v1.5.1 or later specifically resolves the graticule spacing error for high-frequency signals. use the F1 key trick
Inversion Bug: Some users report the screen appearing upside down after certain updates; ensure you match your exact hardware revision to avoid this.
Stability: If the update hangs, try using a shorter USB cable to ensure a stable data connection. If you'd like, let me know: Your current firmware version (e.g., V1.x, V4.x) The first four digits of your serial number If you are experiencing the screen orientation issue
To update your Owon HDS2102S and fix common issues like the horizontal graticule spacing error, follow this guide based on community consensus and official documentation. Key Fixes in Recent Firmware Updating to a version such as
is highly recommended if your unit still has the original factory firmware. One of the most significant documented fixes is for the 2ns/div display issue
, where a 50 MHz signal would incorrectly occupy eight divisions instead of five. Firmware Update Instructions
There are two primary methods depending on the update package you receive from the Owon Download Center or official support. Method A: MSC (Mass Storage Class) Update This is often used for files and doesn't require specialized flasher software. Enter Upgrade Mode : Power on the scope, press F2 (System) , go to the next page, and select Mount as Drive
: Connect the scope to your PC via USB. In the system menu, set the USB mode to . Your PC should recognize it as a removable drive. Transfer File : Copy the firmware file (e.g., ) directly to the root of the scope's removable drive.
: Turn the scope off and then back on. The device will automatically begin the upgrade and shut down once finished. : Turn the scope on and check the version number in the menu to ensure it has changed. Method B: Launcher Software Update For updates using a launcher tool: Launch Tool : Open the Launcher.exe file on your PC and select your language.
: Connect the device via USB and ensure drivers are installed. Initialize "Click then turn on machine to update" in the software. Bootloader Mode
: Turn the scope off and then back on. The software will detect the boot mode and begin transmitting data. : Once the reboot is finished, press on the scope to confirm the update. Important Troubleshooting Tips What is the latest FW version for OWON HDS2102s? - EEVblog