{
  "id": "edimax/ra21s",
  "vendor": "Edimax",
  "model": "RA21S",
  "category": "router",
  "identifiers": {
    "chips": [
      "MediaTek MT7621AT"
    ]
  },
  "status": "open-firmware",
  "projects": [
    {
      "name": "OpenWrt",
      "url": "https://openwrt.org/toh/hwdata/edimax/edimax_ra21s",
      "kind": "firmware",
      "license": "GPL-2.0"
    }
  ],
  "install": [
    {
      "project": "OpenWrt",
      "method": "vendor-upload",
      "guide": "https://git.openwrt.org/?p=openwrt/openwrt.git;a=commit;h=663b1a14e59074a23b86237e0b13dc6e78a6e50b",
      "installer": "https://firmware-selector.openwrt.org/?version=25.12.3&target=ramips%2Fmt7621&id=edimax_ra21s",
      "difficulty": "easy",
      "tools": [
        "Computer with a web browser"
      ],
      "opens_device": false,
      "brick_risk": "low",
      "notes": "Table of Hardware method: GUI OEM (upload the factory image through the stock firmware's upgrade page)."
    },
    {
      "project": "OpenWrt",
      "method": "other",
      "guide": "https://git.openwrt.org/?p=openwrt/openwrt.git;a=commit;h=663b1a14e59074a23b86237e0b13dc6e78a6e50b",
      "installer": "https://firmware-selector.openwrt.org/?version=25.12.3&target=ramips%2Fmt7621&id=edimax_ra21s",
      "difficulty": "medium",
      "tools": [
        "Computer with a TFTP server",
        "Ethernet cable"
      ],
      "opens_device": false,
      "notes": "Table of Hardware method: U-Boot TFTP recovery (send the image to the bootloader's network recovery over TFTP)."
    }
  ],
  "provenance": {
    "sources": [
      "openwrt"
    ]
  },
  "updated": "2026-10-17"
}