{
  "id": "lenovo/thinkcentre-m900",
  "vendor": "Lenovo",
  "model": "ThinkCentre M900",
  "category": "desktop",
  "status": "open-firmware",
  "summary": "Supported by coreboot (src/mainboard/lenovo/m900). Released 2015. Flash: SPI SOIC-8, soldered. flashrom: yes.",
  "projects": [
    {
      "name": "coreboot",
      "url": "https://github.com/coreboot/coreboot/tree/main/src/mainboard/lenovo/m900",
      "kind": "firmware",
      "license": "GPL-2.0"
    }
  ],
  "install": [
    {
      "project": "coreboot",
      "method": "spi-programmer",
      "guide": "https://doc.coreboot.org/tutorial/flashing_firmware/index.html",
      "difficulty": "hard",
      "opens_device": true,
      "brick_risk": "high",
      "reversible": "yes",
      "tools": [
        "SPI flash programmer (CH341A)",
        "SOIC-8 test clip"
      ],
      "notes": "There are no official images: you build coreboot for this board from source (some boards need vendor binaries extracted from the stock firmware). Flash chip: SOIC-8. board_info.txt says flashrom supports the board, so internal flashing may work, but the stock firmware often locks the flash. Back up the original flash contents first: writing them back with a programmer restores the stock firmware."
    }
  ],
  "provenance": {
    "sources": [
      "coreboot"
    ]
  },
  "updated": "2026-10-17"
}