Firmware Update Fix: Owon Hds2102s

The Owon HDS2102S had a well-documented "glitch" where the display showed incorrect timing at the high-speed 2ns/division setting. Specifically, a 50 MHz signal (which should have a 20ns period) was incorrectly rendered as having a 16ns period.

Here is the "story" of how this was fixed and the current status of updates: The Problem & The Fix

The Glitch: Users noticed the horizontal graticules were incorrectly spaced at the fastest timebase, leading to inaccurate waveform measurements.

The Patch: Owon released Firmware Version 1.5.1 specifically to address this display discrepancy. After applying this update, the 50 MHz signal correctly fills the expected 10 divisions (at 2ns/div), restoring accuracy to the handheld unit. Important: Check Your Version First

Before attempting an update, you must identify your current firmware series. Owon uses different hardware revisions that are not cross-compatible:

V1.x.x or V2.x.x: These are earlier versions. Version 1.5.1 is the known stable fix for the display bug in this series.

V3.x.x or V4.x.x: These are newer hardware revisions. Owon has explicitly stated that users with these versions should not attempt to "upgrade" to V1.x.x or V2.x.x, as it can brick the device. Currently, there are often no downloadable updates for these series because the bug was fixed at the factory level. How to Update (General Steps) If you have a V1 or V2 unit and need the fix:

Contact Support: Because the official website often removes older firmware files, it is best to contact Owon Support directly to request the specific .bin file for your serial number.

Preparation: Use a small-capacity USB drive (formatted to FAT32). The Process:

Place the firmware file in the root directory of the USB drive. Connect it to the HDS2102S using the USB-C adapter. Access the System Menu and select the Update option.

Do not power off the device during the process, as this will permanently damage the internal software.

To verify your current version, go to Menu > System > About on your device.

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

Owon HDS2102S firmware update is a critical maintenance step for users experiencing specific hardware-related bugs, particularly around timebase accuracy and display scaling. While the update process is relatively straightforward, it is highly sensitive to hardware revisions. Core Fixes in Recent Updates Recent firmware versions (notably owon hds2102s firmware update fix

and later) address several key usability and technical issues: Timebase Scaling Fix : Corrects a significant display discrepancy in the

horizontal range where graticules were incorrectly spaced. A 50 MHz signal that previously spanned eight divisions now correctly spans five, accurately reflecting a 10ns half-period. Measurement Additions : Newer versions (such as ) have added Ampere units

for vertical measurement, making the device compatible with external clamp meters. Performance Improvements

: Updates generally refine the handheld's responsiveness, though some "quirks" like the "Auto" function occasionally defaulting to an inactive Channel 2 may persist in older versions. Critical Hardware Warnings

Before attempting an update, you must verify your specific hardware version: Non-Upgradable Versions : Units using early Gigadevice flash chips with hard-coded checksums are reported as not upgradable Hardware Pinning

: Firmware versions are strictly tied to specific PCB revisions (e.g., V1.x.x, V4.x.x, V8.x.x). Installing a version starting with a different major number than your current one can lead to "Upgrade Error 4" or a permanently inverted/upside-down screen Manufacturer Advice

: Owon has occasionally advised users not to upgrade unless a specific fix is required, as incorrect firmware can brick the device. Firmware Update Procedure

If your hardware is compatible, follow these steps to apply the fix: Identify Current Version : Navigate to System > F2 (System) > Next Page to check your current version. : Obtain the correct file from the Owon Download Center by entering your model and major version number. Prepare Device : On the scope, go to the menu and set the USB mode to (Mass Storage Class). Transfer File

: Connect to a PC via USB; it will appear as a removable disk. Copy the file to the root directory.

on the scope, turn it off, then turn it back on. The device will automatically flash the firmware and power down upon completion. Have you checked your current hardware revision number to ensure you download the matching major firmware version?

The Ghost in the Waveform

Dr. Elena Vasquez prided herself on two things: her patience, and her Owon HDS2102S. The handheld oscilloscope had been her faithful companion for three years, traveling from noisy wind farms to the silent, sterile labs of the Mars simulation habitat. It was rugged, accurate, and, until last Tuesday, predictable.

Then came the glitch.

It started as a tiny, jagged spike on Channel A—a 2.5Vpp burr that appeared exactly 1.4 milliseconds after every rising edge. At first, Elena thought it was environmental noise. She swapped probes, isolated the circuit, even turned off the LED lights. The spike remained. It was in the scope.

“Firmware,” she muttered, wiping grease from the screen. The current version was V1.0.8. The Owon support forum had whispers of a V1.0.11 beta. The fix log read cryptically: “Improved trigger stability on high-impedance sources.” That sounded close enough.

The update process was a ritual straight out of the early 2000s. She dug out a 4GB microSD card—not 8GB, not 16GB, exactly 4GB—formatted it to FAT32, and downloaded the .upg file. The instructions (translated from Mandarin via a 2014 forum post) warned: “Do not power off. Do not breathe. Do not look at it wrong.”

At 11:47 PM, with the habitat’s air recyclers humming, she inserted the card. The HDS2102S’s screen flickered. A progress bar appeared: [########------------] 38%.

Then the habitat lights dimmed. A brownout. The recyclers stuttered. The scope’s battery, old and cranky, failed to hold the line. The screen went black.

Her heart stopped.

She rebooted the scope. The Owon logo appeared. Then… nothing. A frozen splash screen. Button presses did nothing. The ghost spike was now a permanent resident. The scope was a brick. The Owon HDS2102S had a well-documented "glitch" where

Elena didn’t panic. She reverse-engineered. She knew the HDS2102S ran a hidden bootloader that checked the SD card before the main firmware. On a hunch, she renamed the update file to emergency_recovery.upg. She held down the F1 and Measure buttons simultaneously, then pressed the power button.

The screen flickered green. A secret menu appeared:

[1] Erase user data
[2] Force flash from SD
[3] Rollback to V1.0.7

She selected option 2. The progress bar returned—slow, nervous, like a heartbeat on a monitor. This time, she unplugged the scope from the habitat’s grid and ran it on a fresh set of Eneloop batteries. No brownouts. No interruptions.

[####################] 100%. Update successful. Rebooting.

The HDS2102S booted cleanly. She fed a 1kHz sine wave from her function generator. The trace was smooth as glass. No spikes. No ghosts. She cycled through voltage ranges, timebases, and triggers. Everything worked. Better than before—the FFT function even seemed faster.

Elena leaned back, exhaling. She had not just updated the firmware. She had performed a dark-reset, recovered a bricked device, and documented the emergency recovery key combo for the next poor soul on the forum.

She posted that night: “OwON HDS2102S FW update fix: If you brownout at 38%, hold F1+Measure+Power. Force flash from SD. You’re welcome.”

Within a week, the post had 14,000 views and a sticky from the moderator. And Elena’s HDS2102S? It never glitched again. But she kept a 4GB FAT32 SD card taped to its back. Just in case.

This assumes the device is stuck, fails to boot, or shows erratic behavior after an update attempt, and provides a structured fix procedure.

Conclusion

A firmware update for the OWON HDS2102S is not just about adding features—it is a critical fix for real-world issues like boot loops, touchscreen errors, and measurement inaccuracies. If your HDS2102S is behaving erratically, a firmware update should be your first diagnostic step before considering hardware repair.

Always back up any saved waveforms or setups before updating, and strictly follow OWON’s official instructions for your specific hardware revision.

For the latest firmware files, visit: OWON official support page (search for HDS2102S).

Updating the Owon HDS2102S Go to product viewer dialog for this item.

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 Ghost in the Waveform Dr

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.

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

The OWON HDS2102S handheld oscilloscope (part of the HDS200 series) famously had a display scaling bug where the timebase actually measured as . This caused high-frequency signals, such as a wave, to appear with incorrect periods (showing instead of the correct The Fix: Firmware Version 1.5.1

OWON released firmware version 1.5.1 to resolve this specific horizontal spacing issue. Users who have updated to this version or later report that the

range now correctly displays waveforms with accurate timing and graticule spacing. Update Procedure Overview

While OWON does not always provide a public "one-click" download for all serial numbers, the general process for updating an HDS200 series device involves:

Identify Current Version: Check your current firmware in the device settings menu to see if you are below v1.5.1.

Acquire Firmware: Visit the OWON Download Center to look for the latest software and firmware packages specific to your model.

Note: Some users obtain firmware files from community archives like GitHub repositories or by contacting OWON Support directly if their serial number is not listed.

Flash via USB: Most HDS200 series updates are performed by connecting the device to a PC via USB and using a specific "DSO Flash" or "Upgrade" utility provided in the firmware zip folder.

Verify: After the update, confirm the version is 1.5.1 or higher and test a known-frequency signal at the Key Improvements in v1.5.1 Timebase Accuracy: Corrected the display discrepancy.

Graticule Alignment: Ensured signal periods align correctly with the on-screen grid.

Stability: General bug fixes reported by the community on forums like EEVblog.

Here are a few options for a post about the Owon HDS2102S firmware update fix, tailored to different platforms.

Owon HDS2102S Firmware Update & Fix Guide

The Fix:

Phase 1: Prepare the “Golden” USB Drive (Crucial)

Most “failed” updates are actually USB drive failures. Do this exactly:

  1. Format the USB drive to FAT32, with 16KB allocation unit size. Do not use “Quick Format” only; perform a full format.
  2. Label the volume as FIXSCOPE (no quotes, all caps). Some bootloaders check for a specific volume name.
  3. Download the correct firmware from the official OWON website (owon.com.cn/support/download). As of late 2024/early 2025, the stable version is V1.0.23 or V1.0.36. Avoid beta versions ending in b unless you have a brick.
  4. Rename the file exactly to: hds1_firmware.upk (case-sensitive on some Linux bootloaders – use lowercase).
  5. Copy only that file to the root of the USB drive. No folders. No other files.

Troubleshooting and Fixing the OWON HDS2102S Firmware Update: A Complete Guide

The OWON HDS2102S is a beloved tool among electronics hobbyists and professionals alike. As a 2-in-1 handheld oscilloscope and multimeter, it offers remarkable portability without completely sacrificing performance. However, like any sophisticated piece of digital test equipment, its functionality is heavily dependent on its firmware.

One of the most common pain points for owners is the firmware update process. A search for "owon hds2102s firmware update fix" reveals a community of users facing similar nightmares: the device freezing on the boot logo, erratic touchscreen behavior, incorrect voltage readings, or the device failing to be recognized by a PC.

If you are reading this, you have likely attempted an update and ended up with a "bricked" or glitchy device. Do not panic. In this extensive guide, we will dissect why the updates fail, provide a step-by-step recovery fix, and outline how to safely apply future updates.

Phase 3: Manual Flash via Bootloader Console

Once you see the bootloader console:

  1. Wait for the system to say “USB device detected – update file found.”
  2. If it doesn’t auto-start, use the universal soft-key command: Press F4 (labeled “Update” or “Erase & Update”).
  3. The system will display: “Erasing NAND block 0000...” – This takes 3-5 minutes. Do not power off.
  4. After erasure, you will see “Writing firmware... Do not remove power.”
  5. When complete, the scope will say “Update successful. Reboot in 5 seconds.”

If you see any error message like “Bad CRC” or “Partition mismatch,” your firmware file is corrupt or for the wrong model (HDS2102S vs HDS2102 – they are different!). Redownload the file from OWON directly.