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Topping Technology Co., Ltd

https://www.toppingaudio.com/

Tel: +86-20-37219489
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DX5 II Firmware
Changelog
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V2.39 (August 5, 2026)

*Added: Web Home support.
*Fixed: Several known issues.

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V2.31 (July 2, 2026)

*Fixed: The app may occasionally fail to connect to the phone.
*Fixed: Several known issues.

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V2.27 (June 23, 2026)

*Fixed: Status and volume display abnormalities after restoring factory settings in the app.
*Fixed: Display abnormalities related to app press-function settings.
*Fixed: Some press-function options could not be fully displayed in English and Japanese.
*Fixed: Some settings might not take effect immediately after importing PEQ L/R curves.
*Fixed: Filter import failure.
*Fixed: Importing filters from HOME could cause TUNE abnormalities.
*Fixed: Several known issues.

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V2.14（April 7, 2026）

*Fixed: After selecting Mutual Feedback - Simple - ks2b-JanMeier and saving, the device would restore to factory settings upon reboot or standby wake-up
*Fixed: No audio output when switching sampling rates in NetEase Cloud exclusive mode
*Fixed: Several known issues

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V2.10 (February 27, 2026)

*Fixed: After clicking Feedback Configuration with the right button on the remote control, only the Home button responded while the up/down keys and knob did not work.
*Fixed: After standby, residual image information could be seen on the screen when exposed to strong light.
*Fixed: Rare issue where the Bluetooth name incorrectly displayed as DX5 II AT+SLBN=DX5.
*Fixed: Occasional parameter saving changes after waking up from standby.
*Fixed: several known issues.

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V2.07 (Jan 26, 2026)

*New: DSP cross-feed function
*Fixed: Several known issues
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V1.93 (December 23, 2025)

*Fixed: Several known issues
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V1.91 (December 12, 2025)

*Adjustment: Extended the long-press duration for the C1/C2 buttons on the remote control to 3 seconds before triggering the save function.
*Fixed: Resolved the occasional failure to wake up the device via button press when in standby mode.
*Fixed: The occasional unintended wake-up of the device when in standby mode.
*Fixed: Several other known issues

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V1.87（November 18, 2025）

*Fixed: Several other known issues

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V1.78 (October 27, 2025)

*Fixed: Abnormal sounds after PEQ configuration
*Fixed: Several other known issues
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V1.76 (October 10th, 2025)

*Fixed: The issue that the gain may be amplified by 20dB when switching EQ.
*Fixed: Several other known issues.

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V1.73 (2025-09-28)

Adjustment: Adapted for Tune software, allowing PEQ gain to be adjusted in 0.1 dB steps.

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V1.72 (September 22, 2025)

*New：Menu->Advanced->DC detect sens
*Adjustment: HP DC abnormality detection scheme to further reduce false triggers.
*Fixed: In DAC mode, the volume can still be adjusted via the knob when set to Line Out.
*Fixed: Several other known issues.

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V1.67 (September 6th, 2025)

*Fixed: The issue that the mute - icon didn't disappear after adjusting the volume in mute state.

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V1.66 (September 1st, 2025)

*Fixed: System crash caused by switching C1/C2.
*Fixed: The problem that the Bluetooth version is misjudged with a certain probability, resulting in the device failing to boot up normally.
*Fixed: an issue that the transient being cut off when going from zero output to large signal.
*Fixed: Several other known issues.

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V1.62 (August 25, 2025)

*New: Menu -> Input Settings -> Spdif Mode: 1 (default, high-performance mode); 2 (high-compatibility mode)
*Adjustment: HP DC abnormal detection scheme to reduce false triggers
*Fixed: Probability of VU meter level inversion under FFT interface
*Fixed: Several other known issues

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V1.57 (August 1st, 2025)

*New: Japanese and Traditional Chinese language display
*Fixed: PEQ memory - following not working
*Fixed: Several other known issues

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V1.49 (July 17, 2025)

*Fixed: After detecting abnormal headphone amp DC, the main interface no longer displays "HP DC abnormal".
*Fixed: Audio distortion when switching sampling rates via USB DoP input.
*Fixed: Display lag when rapidly adjusting volume in FFT and VU meter interfaces.
*Optimized: The 5 system preset PEQs can now be edited (parameters and names) or deleted directly via Tune.
*Optimized: EQ entries in the menu are now shown as "number + name" instead of just a number.
*Added: Option to retain PEQ configurations when restoring factory settings.
*Added: In the FFT interface, when adjusting volume, switching inputs, or switching outputs, 
            a large-font display will appear for 3 seconds before returning to the normal interface.
*Fixed: Several other known issues.

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V1.39 (June 26, 2025)

*Enabled:  Setup -> Input Settings -> Input Options -> Auto-detect
*Adjustment: C1 and C2 now save all offset parameters for the entire unit
*Added: "PEQ Switch" option to the function selection for A/B buttons and knob press
*Fixed: Volume not being set to maximum in DAC mode for line output when volume memory is enabled
*Fixed: Abnormal display of Bluetooth device names on some Android phones
*Fixed: Abnormal FFT display after waking up from standby
*Fixed: Several other known issues.

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V1.32 (June 11th, 2025)

*Fixed: Several other known issues.

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V1.30 (February 18, 2025)

* Initial version

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