Owon Hds242 Firmware -

Updating the firmware on your Owon HDS242 (part of the popular HDS200 series) can unlock new features, like increased sampling rates, and fix interface bugs. However, the process is sensitive because Owon uses multiple hardware revisions that are not all cross-compatible. Pre-Update Checklist

Before you start, you must identify your specific device version to avoid bricking it: Check Serial Number: Navigate to the System Menu

on your device to find your current firmware version and serial number. Hardware Compatibility:

Firmware is strictly tied to serial number ranges. For example, older units with "Gigadevice" chips may have read-only ROMs that are

upgradable, while newer "Macronix" chip models can be updated. Charge Your Device:

Ensure your 18650 batteries are fully charged or the unit is plugged into a stable USB-C power source to prevent it from shutting down during the write process. Where to Find Firmware

Official firmware is not always listed on the public "Latest Firmware" page. To get the correct file for your unit: Owon Download Center

Select your category (Digital Oscilloscope) → Series (HDS200) → Model (HDS242). Enter your specific version number as prompted to filter compatible updates. If no update appears, community archives on GitHub (fuho/owon_hds200) owon hds242 firmware

often host mirrors of various versions like v1.7.0 or v5.7.1. The Update Process

Owon typically provides a Windows-based utility for these updates: Run the Launcher: Launcher.exe from the downloaded firmware package on your PC. Connect Device:

Connect the HDS242 to your computer via a high-quality USB-C cable. Enter Update Mode:

Click the "Click then turn on machine to update" button in the software. Wait for Reboot:

The device will receive data, process the update, and automatically reboot. Once it reboots, press the button on the device to finish the installation. Known Firmware Versions & Community Tips Version v4.x and v5.x:

Newer units often ship with these versions. Some users have reported that updating from very old versions (like v1.6.0) to these is not possible due to hardware differences. Calibration:

If you notice a DC offset in your measurements after updating, run the internal Self-Calibration Updating the firmware on your Owon HDS242 (part

routine from the system menu after the device has been on for at least 30-40 minutes. Manual Backups: Advanced users sometimes use an ST-Link V2 to dump their current firmware (address 0x08000000 ) before attempting an official update. Do you have your current firmware version number handy so I can help you find the exact update path? fuho/owon_hds200: HDS200 Info Archive (HDS242 ... - GitHub

Finding a definitive "helpful post" for Owon HDS242 Go to product viewer dialog for this item.

firmware can be tricky because updates are highly dependent on your specific hardware revision and serial number. Key Resources & Posts

The Go-To Discussion: The EEVblog forum thread is the most comprehensive community resource. It contains user-contributed firmware dumps and detailed update instructions.

Information Archive: This GitHub Gist by user fuho serves as a consolidated documentation hub, listing original vs. latest firmware versions, serial number ranges, and hardware differences (e.g., changes in flash chips from Gigadevice to Macronix).

Official Downloads: The Owon Download Center lists the latest official files, but often requires you to enter your current version number to find a match. Critical Firmware Warnings

Hardware Compatibility: Devices with V2.0 hardware cannot be updated to V3.0 or higher because the main boards are physically different. Connect scope to PC with USB

Locked Hardware: Some early units used a "Gigadevice" flash chip with a hard-coded checksum that makes them not upgradable.

Serial Number Matters: When contacting Owon for firmware, you must provide your serial number, as files are often specific to certain production batches. How to Update

If you have a compatible file (typically named Scope.upp), the general process reported by users is:

Check Version: Go to System > System (F2) to find your current firmware.

USB Mode: Change the scope's USB mode from HID to MSC so your PC sees it as a removable drive.

Transfer File: Copy the .upp file to the root of the scope's storage.

Restart: Power the unit off and then back on to trigger the automatic update.

Part 4: Step-by-Step Firmware Update Guide

Once you have the legitimate .upg or .bin file, the process is straightforward but precise.

Typical update procedure (model-agnostic example)

  1. Connect scope to PC with USB. Ensure drivers/PC utility are installed if required.
  2. Put the scope into firmware-update mode per manual (often a special key combo at boot or menu option).
  3. Run the firmware-flash utility or copy the firmware file to the device if instructed.
  4. Start the update and do not disconnect or power-cycle until it completes.
  5. Reboot the scope if not automatic. Verify new firmware version in About/Info.
  6. Run quick functional checks: channel display, trigger, file save/load, USB communication, and calibration markers.

Update Stops at 47% or 83%

Step-by-Step Firmware Update Process

Updating the HDS242 firmware is straightforward but must be done carefully to avoid interrupting power.