{
    "default":  {
                    "version":  "1.0.0",
                    "url":  "https://epen.g77k.com/dev/P_firmware.eimg"
                },
    "variants":  {
                     "M01":  {
                                 "version":  "1.0.1",
                                 "url":  "https://epen.g77k.com/dev/M01/fw.eimg"
                             },
                     "M02":  {
                                 "version":  "1.0.1",
                                 "url":  "https://epen.g77k.com/dev/M02/fw.eimg"
                             }
                 }
}