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Supported Devices

Generation 1

Fully SupportedRequires device teardown

Generation 2

Fully SupportedSimple USB connection

Generation 3

In DevelopmentNot currently supported
Both Generation 1 and Generation 2 thermostats are fully supported.Gen 2 devices are easier to flash (simple USB connection), while Gen 1 requires device disassembly and contact bridging to enter DFU mode.

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How to Identify Your Nest Thermostat

Not sure which generation you have? Use this guide to identify your Nest Thermostat model.

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Visual Identification

Here’s what each generation looks like:

Generation 1

Key Features:
  • Rotating ring with metallic finish
  • 8 wire connectors on backplate
  • Yellow/Green level bubble

Generation 2

Key Features:
  • Similar rotating ring design
  • 8-10 wire connectors on backplate
  • Yellow/Green level bubble

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Generation 1 Thermostat

Nest Generation 1 Thermostat

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Generation 2 Thermostat

Nest Generation 2 Thermostat

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Method 1: Check the Backplate

Remove your Nest from the wall mount and look at the backplate for these identifying features:

Level Bubble Color

Yellow/Green → Gen 1 or Gen 2 ✅Blue → Gen 3 ❌

Wire Connectors

8 connectors → Gen 1 ✅8-10 connectors → Gen 2 ✅10 connectors → Gen 3 ❌

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Method 2: Check Settings Menu

This is the most reliable method:
1

Open Settings

Press on your Nest display and navigate to Settings
2

Go to Technical Info

Navigate to Settings → Technical Info
3

Check Display Model

Look for the “Display model” field. The first digit tells you the generation:
  • 1x (e.g., 1.12) → Generation 1 ✅
  • 2x (e.g., 2.8) → Generation 2 ✅
  • 3x (e.g., 3.7) → Generation 3 ❌
Wondering why No Longer Evil exists? Learn about how Google is intentionally blocking older Nest devices even though they’re fully functional.

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Generation-Specific Installation Requirements

Gen 1 thermostats are fully supported but require device disassembly to enter DFU mode.You’ll need:
  • Phillips screwdriver or similar tool
  • Metal tweezers or similar conductive object
  • Patience for careful disassembly
Gen 1 installation involves opening the device, removing the battery, bridging specific contacts, and reconnecting while the firmware loader runs. Full teardown instructions are provided in the installation guide.
Gen 1 installation is more complex and requires physical device modification. Only proceed if you’re comfortable with electronics teardown.
Gen 2 thermostats are the easiest to flash - just connect via USB and run the installer.You’ll need:
  • Micro USB cable
  • No disassembly required
Gen 2 is the recommended option for beginners due to its simple plug-and-play installation process.
Support is in development. Generation 3 uses different hardware architecture and will require more extensive development.If you have Gen 3 hardware and want to help with development, please reach out via GitHub or Discord.

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Additional Requirements

Beyond having a Generation 1 or Generation 2 thermostat, you’ll need:

Computer

Operating System: Linux (recommended) or macOSPurpose: To run the firmware installer⚠️ Windows is NOT supported (including WSL)

USB Cable

Type: Mini USB (Gen 1) or Micro USB (Gen 2)Purpose: Connect thermostat to computer for firmware flashing

Charged Battery

Level: At least 50% chargePurpose: Ensure device stays powered during flashing

Internet Connection

Speed: Standard broadbandPurpose: Download firmware & access dashboard

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Next Steps

Choose Your Path

Decide between hosted service (easy) or self-hosted (advanced)

Get Started

Jump straight to the recommended hosted setup guide