Razer Basilisk v3 Weird Firmware | Razer Insider
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Razer Basilisk v3 Weird Firmware

  • November 4, 2025
  • 0 replies
  • 27 views

I’m posting here to bring a potential firmware issue to Razer.

My Basilisk v3 wired mouse has been acting strange. I found that when briefly activating the optical sensor by either tapping it on a surface or waving my finger over it, it scrolls up or down.

To be clear, I updated the firmware, made sure the drivers were up to date, and did a Wireshark USBCap to confirm that it wasn’t a physical issue. Through Wireshark, I found that rapidly triggering the sensor sent URB packets through the USB with the same HID data, but different IRP IDs. This tells me that the firmware on the mouse decides to send the same data to the driver when rapidly engaging and disengaging the sensor as it does when using the scroll wheel.

I can’t find any solution online, but I have seen a few other people mention the same issue, and I’ve considered creating a custom driver that filters the issue out, but I really don’t want to do that and I don’t know how yet. I think the best solution would come through a firmware/driver update that could change the data sent through the mouse by the optical sensor.

 

I will include a screenshot of my Wireshark USBCap:

The green and blue packets are intentional scrolls from my scroll wheel, and the pink and purple packets were produced by the sensor. They are colored based on their IRP IDs. The data titled “Leftover Packet Data” is the HID Data.

After additional testing, the problem persists even when gently tapping the sensor, and does not happen when shaking the device.