A90 Discrete version V2.3 firmware update

This firmware is only for A90 Discrete and is NOT applicable to any other models. If this firmware is flashed to other models, it will immediately cause the product to be unusable and unable to repair by yourself. If the firmware of your A90 Discrete is already V2.3, then your A90 Discrete needn't this update.

 

How to check the firmware version of my A90 Discrete?
1, Unplug A90 Discrete power supply and wait a minute. (Very important).
2, Connect A90 Discrete to a PC/Mac via a usb type-C cable. A removable drive will show up in the explorer.
3, Open the removable drive, the file name in it is the version of current firmware. Example: file name VER23 means the firmware version of your A90 Discrete is V2.3.

 

What's updated:

1, Added a new feature allowing 5 different volume curves to select, providing different ranges and steps.
 Users can change volume curves by pressing "B" on the remote. The volume curves and the conversion
 table is available here. When the curve is changed, the volume will be reset to -80dB.

2, Added a procedure to alter the gain setting without using the remote. Users can change the gain to
 high by pressing the volume knob and turning it clockwise by 2 steps in 1.5 seconds while the knob is pressed. 
To change the gain to low, press the volume knob and turning it counterclockwise by 2 steps. 
Pressing the knob for 1.5 seconds without turning turns off the device.

3, Fixed incorrect fault code indication.

 

Firmware Upgrade Process:
1, Unplug A90 Discrete power supply and wait a minute. (Very important).
2, Connect A90 Discrete to a PC/Mac via a usb type-C cable. A removable drive will show up in the explorer.
3, Open the drive.
4, Copy the file A90DV23.Topping to the root directory of the drive. The drive will then eject itself and reconnect.
5, Re-open the drive. A new file will be showing current firmware version as "OKVER23" indicates that the firmware is successfully upgraded.

 

Firmware: Download here

 

If you have questions about the update of your A90 Discrete, please contact us before updating this firmware.