ibi LED can be solid white but become offline under the following conditions.
Firwmare Update In Progress
ibi firmware update is delivered "over the air" and cannot be updated manually. When the "over the air" firmware update occurs, ibi will be rebooted, the LED will blink and return to solid white when the process has completed.
Device Does Not Boot
If your ibi's LED becomes solid immediately after applying power, it may not have completed the boot up sequence properly. Powering OFF and ON your ibi multiple times may cause the device to recover from the Solid White LED at power on state.
For more information regarding your ibi's start up sequence, please see Article ID: 21447 ibi start up process and LED sequence.
Cloud Account Issue
ibi LED can be solid white, but device is offline after performaing a 60+ second pin reset or system erase if there is a cloud account issue.
For more details, please see ibi is offline after system erase or 60 second pin reset