Firmware Update Verified: Owon Hds2102s
When the lab lights hummed awake at 07:30, Jun poured a final cup of coffee and sat at the bench where his Owon HDS2102S oscilloscope waited. It had been a dependable instrument for three years: 20 MHz, dual-channel, the little white scope that had caught more flaky circuits than he could count. Today it had a job that felt small but mattered — verify a firmware update that promised a subtle but crucial fix to channel-trigger timing.
He’d read the release notes the week before: "Improved trigger stability on low-amplitude signals; corrected rare UART logging freeze; minor UI refresh." Those sounded like lab folklore — the sort of fixes firmware teams promise between versions — but the UART freeze had bitten his test runs twice this month. Mid-run freezes meant lost data and late nights. So Jun scheduled a brief maintenance window.
Step 1: Preparation Jun backed up the scope’s screen captures, saved the configuration file, and removed the BNC leads from sensitive DUTs. He printed the update notes and checked the scope’s current version: 1.02. The update file on his flash drive was labeled HDS2102S_v1.04.bin, with a checksum published on the vendor page. He confirmed the MD5 hash matched. Verification first; assumptions later.
Step 2: The Update He inserted the flash drive, navigated the menu to System → Firmware Update, and selected the file. The scope warned that power loss during update could brick the device. Jun hooked the bench UPS to the wall outlet and confirmed battery health on the UPS display — good. He tapped “Start.”
Progress bars are tiny rituals; watching them is a quiet trust exercise between user and machine. 10%… 37%… at 73% the scope reloaded its bootloader and the screen flickered. Jun held his breath until the message changed to “Update complete — verifying.” A checksum routine ran, slower than the installer itself, then the reassuring green text: “Firmware verified. Rebooting.”
Step 3: First Boot and Sanity Checks After reboot, the login banner displayed v1.04 and a fresh default wallpaper. He reloaded his saved configuration, which restored channel labels, probes, and measurement presets. He ran a quick sanity check: a 1 kHz square wave from the function generator into Channel 1, channel 2 tied to ground. The trace was steady, measurements matched the generator to within expected tolerance, and trigger behavior looked normal.
Step 4: Reproducing the Bug To confirm the UART freeze fix, Jun reproduced the exact stress that had caused hangs: a long-duration capture while the scope streamed occasional log messages over UART to a PC that was simultaneously polling on a serial terminal. Previously, after roughly 20 minutes of continuous captures with burst logging, the scope would stop sending and require a power cycle. He started the test and let the system run.
Twenty-two minutes in, the PC still received regular log packets. The scope’s screens showed steady acquisition; no frozen UI. Jun let it run to forty-five minutes to be confident. The logs remained consistent, with no missing packets and stable timestamps.
Step 5: Trigger Stability Validation Next was the low-amplitude trigger test. He connected a 50 mVpp sine wave, offset near the trigger threshold and added a bit of external noise to stress the trigger comparator. He captured long persistence traces and measured the trigger jitter. Where before the scope could slip tens of microseconds under noisy conditions, the new firmware held jitter within a tighter band. He recorded multiple captures and exported them.
Step 6: Regression and Feature Check Good firmware can’t fix one thing and break another. Jun ran a brief regression suite: channel calibration, FFT analysis, measurement averaging, USB mass-storage read/write, and the menu navigation speed. Everything behaved as expected. The UI refresh felt snappier; menus that had once skipped frames while rendering long lists now scrolled smoothly.
Step 7: Documentation and Rollback Plan Jun documented his validation steps and results in the lab notebook: checksums, dates, test configurations, before/after screenshots, and the duration of long-run tests. He also kept the original v1.02 binary on the bench drive and wrote down the rollback procedure in case a colleague encountered a problem later.
Conclusion: Verified At 11:40, he emailed the team: "HDS2102S: v1.04 installed and validated. UART freeze not reproducible after 45-minute stress; trigger stability improved under low-amplitude, noisy conditions. No regressions observed. Rollback image saved as HDS2102S_v1.02.bin." The reply thread filled with thank-yous and a note from a colleague who’d been on the receiving end of a frozen test last month: "Nice — ship it."
Jun sat back, sipped the cooling coffee, and felt that small professional satisfaction: the update did what it claimed, the device behaved, and the data could be trusted. The scope returned to its usual place guarding the bench, firmware updated and verified — one less variable in an environment that thrives on precision.
If you want, I can provide a concise checklist of the exact commands, test signals, and expected measurements Jun used to validate the update.
Updating firmware on the OWON HDS2102S Go to product viewer dialog for this item.
is a task that requires careful verification of your current hardware and software versions, as updates are not cross-compatible across different main version branches. Key Firmware Facts & Verified Issues
Version Compatibility: If your scope has a version starting with V4.x.x, you can only update to other V4 versions. Attempting to use V1.5.1 or V2.0.4 on a V4 unit will fail and potentially brick the device.
Resolved Display Bug: Earlier units (pre-V1.51) had a display discrepancy where the 2ns/div horizontal range showed incorrect timing (actually 2.5ns/div). This was verified to be fixed in firmware V1.51.
Availability: Official downloadable updates for V3 and V4 branches are often not public. OWON support has occasionally advised users with these versions not to attempt updates unless a specific bug is present.
New Features: Recent updates (such as V4.7.1+) have introduced Ampere units for vertical measurements, useful for clamp meter users, and renamed certain commands (e.g., SQR to RMS). Verified Update Procedure
According to user reports and technical guides, the upgrade process follows these steps:
Check Version: Navigate to the System menu on the HDS scope and select System (F2) to view your current version.
Enable USB Mode: In the System menu, set the USB mode to MSC (Mass Storage Class).
Transfer File: Connect the device to a PC. A removable disk will appear. Copy the .upp firmware file (e.g., Scope.upp) directly to the root of this disk.
Execute: Power the scope off and back on. The device will automatically run the upgrade and shut down when finished. Where to Find Files
Official Portal: Check the OWON Download Center for the latest general releases.
Community Archives: For older or specific version branches, the EEVblog forum and GitHub archives are the primary sources for verified firmware files.
Here’s a sample post for a forum or social media update regarding a verified firmware update for the OWON HDS2102S handheld oscilloscope:
🔧 OWON HDS2102S – Verified Firmware Update Available
Just successfully updated my OWON HDS2102S to the latest firmware. After testing and verification, the update is stable and improves a few key areas: owon hds2102s firmware update verified
✅ Improvements noted:
📌 Firmware version after update: [insert version number, e.g., V1.2.6]
📅 Release date (if known): [insert date]
Update method (verified working):
⚠️ Important notes from my verification:
🔁 Rollback possible? The official update tool does not support downgrading to older firmware versions, so update only if the fixes apply to your use case.
If you’ve updated yours, drop your experience below. Happy to help anyone running into issues.
Updating the firmware on your Owon HDS2102S handheld oscilloscope is the best way to eliminate software bugs, improve waveform refresh rates, and ensure your signal generator functions remain stable. Because a failed flash can brick your device, using a verified process is essential.
Follow this guide to safely update your Owon HDS2102S to the latest verified firmware version. 🛠️ Preparation and Requirements
Before starting, gather these items to prevent any interruptions during the data transfer:
USB-C Cable: Use a high-quality data cable (the one included in the box is preferred).
Windows PC: The update utility is currently only compatible with Windows.
Battery Charge: Ensure your HDS2102S has at least 50% battery or is plugged into a stable power source.
Current Version Check: Press Utility > System Info to note your current "V" version. 📥 Downloading the Verified Files
Do not download firmware from unofficial forums. Always pull the latest package directly from the manufacturer to ensure the checksums match your hardware revision. Visit the Owon Official Website (owon.com.hk). Navigate to the Service & Support > Download section. Search for HDS200 Series. Download the Firmware Update Package and the USB Driver. 🔄 The Step-by-Step Update Process 1. Install the Drivers
Unzip the downloaded folder and locate the driver installer. Run the setup as an administrator. This ensures your PC recognizes the oscilloscope when it enters "Update Mode." 2. Connect in Update Mode
Power off your Owon HDS2102S. Connect it to your PC via USB-C. While the device is off, hold down the "A" button (or the specific key combo indicated in your download readme) and press the Power button. The screen may remain dark or show a bootloader message. 3. Run the Update Utility
Open the Owon Update software on your PC. It should display "Device Connected" in the status bar. 4. Load and Flash
Click Open and select the .bin or .hfs file from your download. Verify that the file name matches your model (HDS2102S). Click Update.
Important: Do not touch the cable or turn off the PC during the progress bar move. 5. Finalize the Update
Once the software says "Success," the oscilloscope will typically reboot. If it doesn't, manually power it off and back on. ✅ Verifying the Update
To confirm the update was successful, perform these three checks:
Version Verification: Go to Utility > System Info and confirm the version number has changed.
Self-Calibration: After any firmware change, it is highly recommended to run the Self-Cal routine from the Utility menu to ensure measurement accuracy.
Test the AWG: If you have the "S" model, test the Arbitrary Waveform Generator to ensure the update didn't reset your signal output parameters. ⚠️ Troubleshooting Common Issues
Device Not Found: Change your USB port (use a rear port if on a desktop) or try a different USB-C cable.
Update Failed at 99%: This usually indicates a driver conflict. Restart your PC and try again with "Run as Administrator."
Screen Won't Turn On: If the device is unresponsive, remove the 18650 batteries for 30 seconds, reinsert them, and try to boot normally. If you'd like, I can help you find: The latest version number currently available A link to the official Owon driver page
Instructions on how to backup your current settings before flashing
Upgrading the firmware on the Owon HDS2102S is a precise process that can resolve significant performance issues, such as the widely documented 2ns/div display discrepancy. However, proceed with caution: Owon support often advises against updates unless you are targeting a specific fix, as newer firmware is strictly hardware-version dependent. Verified Firmware Fixes When the lab lights hummed awake at 07:30,
Horizontal Scale Fix: Updating to v1.5.1 or higher resolves a bug where 50 MHz signals displayed incorrectly at the 2ns/div range.
Measurement Units: Recent updates (e.g., v4.7.1) have added the ability to display vertical units in Amperes, which is helpful when using current clamp meters. Before You Start: Compatibility Check
You must match your firmware version precisely to your hardware. Updating with an incompatible file can lead to "Upgrade Error 4" or a bricked device.
Check Version: Navigate to System > System > Page 2 > About on your device. Version Chains:
If you are on v1.x.x, you can typically only upgrade to other v1.x.x versions.
If you are on v4.x.x, updates often transition from v4.1.0 toward v4.7.1 or v4.9.0. Verified Update Procedure
Download Official Files: Visit the Owon Download Center and search for your specific HDS200 series model.
Enable MSC Mode: Connect your scope to a PC via USB. On the scope, go to System > USB and select MSC (Mass Storage Class). The device will appear as a removable drive.
Transfer File: Copy the firmware file (e.g., Scope.upp) directly to the root of the removable drive.
Initiate Flash: Power the scope off and then back on. The device will automatically detect the file, perform the upgrade, and shut down once finished.
Verify: Power it back on and check the version number in the System menu. Community Tools & Alternatives
Owowon UI: For users looking for faster data acquisition (up to 100 readings per second), the Owowon GitHub project offers a custom Windows interface tested specifically with HDS2102S v1.5.
Historical Archive: Community-maintained hardware and firmware logs can be found on GitHub by fuho, detailing board dates and specific serial number ranges for safe matching.
If you'd like, let me know your current firmware version or the hardware date from your system menu, and I can help you verify if a specific update like v1.5.1 or v4.7.1 is safe for your unit.
The following report summarizes the status and verified procedures for firmware updates on the OWON HDS2102S Go to product viewer dialog for this item. handheld oscilloscope. Current Firmware Status (as of April 2026)
Owon updates are highly specific to hardware revisions; attempting to install the wrong version can cause malfunctions. Latest Known Versions:
V1.5.1: Specifically fixes horizontal spacing discrepancies in the V4.7.1 / V4.9.0: Reported for newer hardware revisions.
Compatibility Warning: Users should check their current version (e.g., V1.x.x, V2.x.x, V4.x.x) before attempting updates. Official guidance from Owon support suggests that if a version is not listed for your specific model/serial number on the Owon Download Center, you should not attempt an upgrade. Verified Update Procedure
There are two common methods depending on the firmware package type: Method A: Direct File Transfer (MSC Mode) Used for ".upp" firmware files. Initialize: Power on the
. Press System > F2 (System) > navigate to the next page and select Upgrade.
Connect: Use a USB-C cable to connect to a PC. Under System, set the USB mode to MSC.
Transfer: A removable disk will appear on the PC. Copy the update file (e.g., Scope.upp) to this disk.
Finalize: Power the scope off and back on. The unit will automatically perform the upgrade and shut down when finished.
Verify: Power on and check the version number in the System menu. Method B: Firmware Update Tool Used for packages requiring a PC-side flashing utility.
Drivers: Install the specific USB device drivers from the manufacturer's package and verify they appear in the PC's Device Manager.
Setup: Open the firmware update tool on the PC and select the appropriate language.
Bootloader Mode: Turn the oscilloscope off, then on again as prompted by the software to enter boot mode.
Flash: Click Start to begin the flashing process. The device will automatically restart upon completion. Critical Safety Precautions
Hardware Variants: Early units used "Gigadevice" flash chips which may have read-only OTP SecureRom and are reportedly not upgradable. 🔧 OWON HDS2102S – Verified Firmware Update Available
Official Verification: Always enter your device's current version number on the Lilliput (OWON) Support Page to find the correct verified update path.
Upgrading the firmware on your OWON HDS2102S can resolve critical issues, such as a known display bug where a 50 MHz signal appeared incorrectly at the horizontal range. However, verified safety is paramount
; the manufacturer warns that firmware versions are specific to hardware revisions and that installing the wrong version can cause malfunctions. 🛠️ Pre-Flight Verification (Crucial)
Before attempting any update, you must identify your current hardware and software version. Check Version F2 (System)
, and navigate to the next page to find your current version (e.g., The "Golden Rule" : If your version starts with a certain number (e.g., ), you can update to versions starting with that same number. Do attempt to "upgrade" from
just because it's on the website—this is often a hardware-specific version. Manufacturer Warning
: OWON has explicitly stated for some users that there may not be a downloadable latest version for certain HDS2102S units and advised against upgrading. 📖 The Update Procedure (Standard MSC Method) For most units that support user updates (like the
series), follow these steps found in the official manual and user communities: Prepare the Unit : Turn on the scope, push F2 (System) , go to the next page, and select Connect to PC
: Connect the HDS scope to your computer via USB cable. In the menu, set the USB mode to
(Mass Storage Class). Your scope should now appear as a removable disk on your PC. Transfer Firmware : Copy the verified firmware file (typically named ) directly to the root of the removable disk. Execute Flashing Turn off the scope and then turn it back on.
The scope will automatically begin the upgrade process and will turn off itself once finished. Confirm Success : Turn the scope back on and return to the
menu to verify that the version number has changed (e.g., to ⚠️ Troubleshooting & Warnings Driver Issues
: If your PC doesn't recognize the device, you may need to install the specific USB drivers from the OWON Download Center Hardware Changes
: Units manufactured at different times use different flash chips (e.g., Gigadevice vs. Macronix). Gigadevice chips often have hard-coded checksums and may be unupgradable Upside Down Screen
: A common symptom of installing incompatible firmware is the LCD display rotating 180 raised to the composed with power
. If this occurs, you must revert to your original firmware version immediately. For official files and manuals, visit the Lilliput (OWON) Support Page What is your current firmware version number so I can help you confirm the safest path?
The Owon HDS2102S Go to product viewer dialog for this item.
handheld oscilloscope has an established firmware update process that resolves critical bugs, most notably fixing a display timing issue where a 2ns/div setting previously showed incorrect waveforms. Verified Update Procedure
Updating the firmware involves putting the device into a "Mass Storage Class" (MSC) mode so a computer can recognize it as a removable drive.
Preparation: Download the correct firmware file (e.g., Scope.upp) specifically for your model from the Owon Download Center. Enter Upgrade Mode: Power on the device. Press the System button and navigate to System > Upgrade Establish PC Connection: Connect the to your PC via a USB-C cable. In the system menu, toggle the USB setting to MSC. Transfer & Install:
The device will appear as a removable disk on your computer. Copy the firmware file to this disk.
Power the scope Off and then back On. It will automatically install the update and shut down once finished.
Verification: Power on the device and check the version number in the System menu (e.g., version 1.5.1 or later) to confirm success. Key Benefits of Updating
Accuracy Fix: Corrects graticule spacing at high speeds (2ns/div), ensuring signals like 50 MHz are displayed with the correct period.
Enhanced Features: Newer versions (such as v4.7.1+) have been noted to include or improve features like RMS measurements and "auto" button stability.
Stability: Bug fixes for CSV file exports and system-level crashes reported in earlier versions.
Note: Always match the firmware to your device's specific serial number range, as some hardware revisions may not be compatible with all firmware versions.
To verify and potentially update the firmware of an OWON HDS2102S device, follow these steps. Note that specific steps may vary depending on the device's model and the firmware version you are updating to. Always refer to the official OWON documentation or support resources for the most accurate and detailed instructions.
Before you close this article, confirm these five points:
Do not simply click the first Google result. Follow this verification ladder:
This is the high-risk zone. Ensure your PC’s sleep mode is disabled.