{
  "id": "google/nexus-9",
  "vendor": "Google",
  "model": "Nexus 9",
  "aliases": [
    "Nexus 9 (Wi-Fi)",
    "flounder",
    "Nexus 9 (LTE)",
    "flounder_lte",
    "htc-flounder",
    "htc-flounder-downstream"
  ],
  "category": "tablet",
  "status": "open-firmware",
  "projects": [
    {
      "name": "LineageOS, discontinued after 14.1 (flounder)",
      "url": "https://wiki.lineageos.org/devices/flounder/",
      "kind": "firmware",
      "license": "Apache-2.0"
    },
    {
      "name": "LineageOS, discontinued after 14.1 (flounder_lte)",
      "url": "https://wiki.lineageos.org/devices/flounder_lte/",
      "kind": "firmware",
      "license": "Apache-2.0"
    },
    {
      "name": "Nura/postmarketOS (archived: unmaintained, may not boot, htc-flounder)",
      "url": "https://gitlab.postmarketos.org/postmarketOS/pmaports/-/tree/main/device/archived/device-htc-flounder",
      "kind": "firmware",
      "license": "GPL-3.0"
    },
    {
      "name": "Nura/postmarketOS wiki: Google Nexus 9 (htc-flounder)",
      "url": "https://wiki.nura.eco/wiki/Google_Nexus_9_(htc-flounder)",
      "kind": "other",
      "license": "CC-BY-SA-4.0"
    },
    {
      "name": "Nura/postmarketOS (archived: unmaintained, may not boot, htc-flounder-downstream)",
      "url": "https://gitlab.postmarketos.org/postmarketOS/pmaports/-/tree/main/device/archived/device-htc-flounder-downstream",
      "kind": "firmware",
      "license": "GPL-3.0"
    }
  ],
  "provenance": {
    "sources": [
      "lineageos",
      "postmarketos"
    ]
  },
  "updated": "2026-10-17",
  "identifiers": {
    "chips": [
      "NVIDIA Tegra K1 (T124)",
      "Tegra132"
    ]
  },
  "install": [
    {
      "project": "LineageOS",
      "method": "usb-bootloader",
      "guide": "https://wiki.lineageos.org/devices/flounder/install/",
      "difficulty": "medium",
      "tools": [
        "Computer with adb and fastboot",
        "USB cable"
      ],
      "reversible": "partial",
      "notes": "No longer maintained: there are no official builds, the guide has you build LineageOS from source. The bootloader must be unlocked first, which also wipes the device; some vendors make you request an unlock code or wait before unlocking. Installing wipes all data on the device: back it up first."
    },
    {
      "project": "LineageOS",
      "method": "usb-bootloader",
      "guide": "https://wiki.lineageos.org/devices/flounder_lte/install/",
      "difficulty": "medium",
      "tools": [
        "Computer with adb and fastboot",
        "USB cable"
      ],
      "reversible": "partial",
      "notes": "No longer maintained: there are no official builds, the guide has you build LineageOS from source. The bootloader must be unlocked first, which also wipes the device; some vendors make you request an unlock code or wait before unlocking. Installing wipes all data on the device: back it up first."
    }
  ],
  "interfaces": [],
  "claims": [],
  "verification": []
}