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Topping DX3PRO+ Firmware HP ERR Error?

 

250521 – Repost from a My Korean Blog

Apart from the balanced combo of E50 and L70, the DX3 Pro+ (DeukSample) I own as a secondary device is used almost exclusively with EarPods. I’ve been using it without issues for years, but over the past few days an “HP ERR” has suddenly appeared.



I didn’t manage to take a photo showing “HP ERR”… In any case, when the issue occurs, “HP ERR” appears on the display.



On the Topping website’s DeukSample section, it says things like “Update this, reboot that…”
In practice, unplugging the power cord, letting it rest briefly, and then reconnecting does fix it—for the moment. The problem is that it keeps happening periodically…

To address this, some people even insert a cut filter to block DC, like this:


I’d used the device for years without any cut filter and never had issues, but over the past few days “HP ERR” started appearing frequently.

The only recent change was connecting the ButtKicker—but since it’s physically separate, it couldn’t have caused this.

Then it occurred to me: when installing the ButtKicker, I decided to update any pending Topping drivers and firmware. I downloaded and applied the updates… and that turned out to be the cause.

Currently, the latest firmware for the DX3PRO+ is version 1.28, but it seems a significant number of users experience HP ERR on that version. Unfortunately, the official website no longer hosts older firmware links, so I contacted Topping (and via ASR) to obtain the firmware files. I’ve uploaded them at the link below—just download and install the specific version you need.

https://drive.google.com/drive/folders/13eK0H835YKp1UIb3mCI3sn_y4R_1Wt7W?usp=sharing


These are versions 1.23, 1.24, and 1.25. I experienced no HP ERR errors on any of these three versions.

The update process is simple: unzip the package, run the .exe as described in the Readme, load the firmware file, click “Start,” and you’re done.

So if you encounter HP ERR on your DeukSample, it’s worth considering a firmware upgrade or downgrade. 


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