Razer Cobra Pro Bluetooth Problem | Razer Insider
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Question

Razer Cobra Pro Bluetooth Problem

  • August 25, 2025
  • 2 replies
  • 156 views

I usually use my mouse via Bluetooth, and everything worked fine until recently. Last month, there were no issues. However, now I can't connect the mouse via Bluetooth anymore.

Here’s what I’ve done so far:

I updated both the mouse firmware and the Razer Synapse software. I tried macos and windows pc.

I followed the user manual to reset the mouse to factory settings and tried to set up Bluetooth again.

Issue Details:

When I switch the connection mode on the bottom of the mouse to Bluetooth, I no longer see the white profile light that used to appear (it worked before).

The mouse still works perfectly when using the 2.4GHz wireless dongle (USB). In this mode, the white profile light is visible as expected.

In Bluetooth mode, the white profile light doesn't come on at all.

I tried holding Button 5 + Scroll Wheel + Right Click for 3 seconds (as per reset instructions), but nothing happened.

There’s also no wireless blinking light on top of the mouse when trying to pair via Bluetooth.

Summary:

The mouse works fine via USB dongle, but Bluetooth mode seems to be completely unresponsive — no light, no pairing, no indication it's working. It ca be new driver problem. Because it was working.  I tried factory reset on razer synapse.

 

My mice: 

Sn: PM2437H27300614

Firmware version: 2.1.0.0

My Questions:

What might be causing this issue?

How can I fix the Bluetooth connectivity?

Is it possible to change my mouse driver the old one? (downgrade).

 

2 Replies

  • Insider Mini
  • August 28, 2025

I'm also having a similar problem. I just got the mouse and first used it yesterday. It had issues right out the box. After updating firmware and uninstall/install Razer Synapse, it finally worked fine. Woke up this morning to find out it won't even turn on... Finally got it to work with usb cable but no luck with 2.4/bluetooth. I didnt spend $$ for a wired mouse. 


  • Author
  • Insider Mini
  • September 12, 2025

I believe the new mouse firmware has broken Bluetooth pairing. This issue should be fixed in an upcoming update.

@Razer Admin  — could you please test this case with your development team?
We are waiting for a new version that resolves the problem.