topic Re: Nest Protect - Pathlight Stays On Frequently - Firmware 5.0rc31 in Nest Protect

Nest Protect firmware 5.0rc31 appears to be broken

cs12ag — Tue, 24 Mar 2026 12:57:06 GMT

Hello,

It appears that firmware 5.0rc31 is not doing occupancy and history properly.

It is difficult to determine within the Nest app when this firmware was applied to my Protects, but I believe it was in the last few days. I have no 'Protect History' in the Nest app for two of my Protects, starting from 22nd March for one and 19th March for the other. I also have no occupancy detection for these two Protects, appearing to start on the same dates for each Protect device respectively (I am determining this using the unofficial Nest Protect plug-in within Home Assistant). My third Protect is still on 3.6rc8, and has full history within the Nest app and is still able to detect occupancy as expected.

I have successfully performed the 'safety check' on all three of the Protects. I don't want to factory-reset my devices with the higher firmware as I have no indication this will solve the problem.

For reference, this problem has been noticed by the unofficial Nest Protect plugin users, discussion here: https://github.com/iMicknl/ha-nest-protect/issues/476

Please can this be escalated within the support desk? Is this a bug in the firmware? Or is this a breaking change in the API, that apparently the Nest app hasn't been uplifted to support yet?

Thanks in advance.

Nest Protect - Pathlight Stays On Frequently - Firmware 5.0rc31

Mubble — Wed, 25 Mar 2026 10:07:47 GMT

I have four Nest Protect devices in my home. Over the past few weeks I have noticed the pathlight on three of them frequently remains lit at night after I've left the room, I have them set correctly in the settings to 'On' and not 'Always On'. I often have to re-enter the rooms and wave my arms in order for them to notice movement and then register I've left the room again.

The three affected by this are on firmware 5.0rc31.

The one which works fine is on firmware 3.6rc8.

Re: Nest Protect - Pathlight Stays On Frequently - Firmware 5.0rc31

RoboPapa — Sat, 28 Mar 2026 10:04:11 GMT

Hi, I have exactly the same issue. The Pathlight on the unit with Firmware Version 5.0rc31 only started staying on very recently. My second unit is on Firmware Version 3.6rc8 and Pathlight works as it should.

I cannot even find any details on Firmware Version 5.0rc31 listed anywhere.

Strange!

Re: Nest Protect - Pathlight Stays On Frequently - Firmware 5.0rc31

SaraEs — Mon, 30 Mar 2026 15:27:37 GMT

Hi there,

Thanks for reaching out to the community. I understand that you have four Nest Protects, and three of them frequently remain lit at night after you’ve left the room even though you have them set correctly, and you often have to enter the room again and wave in order for them to register the movement. No worries, help’s here.

To understand better the issue, I’d like to ask a few questions:

Is your Nest Protect wired or battery, 1st or 2nd gen? Please refer to this article to check which one you have: How to tell which Nest Protect you have.
Is the Nest app running on its latest version?
Have you received any alert notification in the app?

I'll be waiting for your response.

Best regards,

Sara

Re: Nest Protect - Pathlight Stays On Frequently - Firmware 5.0rc31

Lexxx83 — Mon, 30 Mar 2026 09:01:45 GMT

Hi @SaraEs,

I think this topic by @cs12ag :

Nest-Protect-firmware-5-0rc31-appears-to-be-broken

Is about the same problem.

I myself have also been experiencing problems with 2 of the three Protects for 2 weeks now.

Nest App Version 5.86.3 (Apple)
Net Protects Model : Topaz-2.33 Wired
Software protects affected: 5.0rc31
Software protect working perfect: 3.6rc8
No notifications in the app that explain or clarify this problem.

What I have already tried myself:

Removing the Protects from the app and adding them again.
Completely resetting by holding down the button. Tried to force firmware updates by holding the button for 5 seconds. Tried this in various sequences and multiple times, but without result.

As mentioned earlier, nothing about firmware 5.0rc31 can be found anywhere... please explain how some people can run on a "non-existent" firmware.

We expect a solution as soon as possible, as a downgrade is not possible according to the documentation.

I also contacted Support, where I received an email stating that I would receive a response within two working days. Unfortunately, to date, still no response...

Best regards,
Lexxx83

Re: Nest Protect - Pathlight Stays On Frequently - Firmware 5.0rc31

DennisLundberg — Mon, 30 Mar 2026 12:09:39 GMT

Hi, I am experiencing the same problem.

We have 2 Nest Protect units, one with the older 3.6 firmware and one with the newer 5.0 firmware. The pathlight often, but not always, stay on after being triggered by motion for the unit with 5.0 firmware. This has never happened before the new firmware was installed.

Re: Nest Protect - Pathlight Stays On Frequently - Firmware 5.0rc31

DennisLundberg — Mon, 30 Mar 2026 12:17:11 GMT

Both our units are of model Topaz-2.7 wireless.

Re: Nest Protect - Pathlight Stays On Frequently - Firmware 5.0rc31

Lexxx83 — Tue, 31 Mar 2026 13:56:16 GMT

@SaraEs Even now, it remains suspiciously quiet... 😞

Re: Nest Protect - Pathlight Stays On Frequently - Firmware 5.0rc31

Mubble — Tue, 31 Mar 2026 15:28:10 GMT

All four are wired, Gen2 and running from Google Home on the latest software.

Re: Nest Protect - Pathlight Stays On Frequently - Firmware 5.0rc31

RoboPapa — Tue, 31 Mar 2026 16:05:38 GMT

I have Nest Protect Gen2 Wired devices.

My Nest IOS App is on Version 5.86.3.

I have two Nest Devices, one with Firmware Version 5.0rc31 with Pathlight not working correctly since upgrade 5.0rc32 and second device with Firmware Version 3.6rc8, with Pathlight working correctly as always.

Topaz-2.33 on both devices.

Kind Regards,

John

Re: Nest Protect - Pathlight Stays On Frequently - Firmware 5.0rc31

NestProtectFan — Wed, 01 Apr 2026 23:58:43 GMT

I can provide a larger dataset. I have 11 Nest Protects, broken down as follows:

2x wired Topaz-2.33, running 3.6rc8
1x battery Topaz-2.33, running 3.6rc8
1x wired Topaz-2.34, running 3.6rc8
3x wired Topaz-2.7, running 3.6rc8
1x wired Topaz-2.7, running 5.0rc31
1x wired Topaz-2.9, running 3.6rc8
2x wired Topaz-2.9, running 5.0rc31

The pathlight works correctly on 100% of the units running 3.6rc8

The pathlight stays continuously illuminated in the dark on 100% of the units running 5.0rc31

In my professional opinion, this is clearly a bug in 5.0rc31

Re: Nest Protect - Pathlight Stays On Frequently - Firmware 5.0rc31

DipsB — Sat, 04 Apr 2026 02:01:42 GMT

Still no update from you, disappointing from Google.

Re: Nest Protect firmware 5.0rc31 appears to be broken

Ch484 — Mon, 06 Apr 2026 05:27:27 GMT

My path light stays on all the time now. It’s set to motion but never turns off even when there isn’t motion

Nest Protect Firmware: 5.0rc31 has broken the Occupancy sensors.

ShaunH — Tue, 07 Apr 2026 11:59:17 GMT

I have 3 Nest Protect devices.

One works fine with Firmware: 3.6rc8 located near some bedrooms. That detects occupants and the pathway light comes on and goes off as expected.

Two others fail to sense any Occupancy changes with Firmware: 5.0rc31

One near the Entryway, is stuck on Clear and fails to detect anything, the other near the Kitchen is stuck on Detected and refuses to go off. The lines on both failed stuck graphs are where the devices were either reset or re-added to the app.

Please raise a testing defect and roll back the firmware to 3.6rc8. This is now a Production fault affecting real end users.

Re: Nest Protect - Pathlight Stays On Frequently - Firmware 5.0rc31

Lexxx83 — Wed, 08 Apr 2026 10:15:27 GMT

@SaraEs any update??

Re: Nest Protect - Pathlight Stays On Frequently - Firmware 5.0rc31

julyadadoll — Wed, 08 Apr 2026 19:22:09 GMT

Hi, have you tried any possible resolution?

Re: Nest Protect - Pathlight Stays On Frequently - Firmware 5.0rc31

Mubble — Wed, 08 Apr 2026 20:53:24 GMT

Two weeks and no update. Good service Google.

Re: Nest Protect - Pathlight Stays On Frequently - Firmware 5.0rc31

Aaron40 — Sat, 11 Apr 2026 23:44:07 GMT

Same problem here, for a bout 2 weeks the path light is staying on. I have 2 x wired nest protect detectors on version 5.0rc31.

Please can google fix

Re: Nest Protect - Pathlight Stays On Frequently - Firmware 5.0rc31

DipsB — Sun, 12 Apr 2026 10:39:45 GMT

Absolutely terrible by Google.

It makes you wonder if this is the reason they have stopped selling Nest's!

Re: Nest Protect - Pathlight Stays On Frequently - Firmware 5.0rc31

DennisLundberg — Mon, 13 Apr 2026 10:49:36 GMT

@SaraEs You have now received multiple consistent reports of this issue, with the details you requested. All report points to a bug in the 5.0rc31 firmware across several different hardwares.

Can you acknowledge that you have received thet additional information that you requested?

Is there someone working on a fix for this bug?

When can we expect a rollout of a working firmware? Personally I'd be ok with rolling back to the working 3.6rc8 firmware, until a fix can be made to the 5.0 firmware.