I really can't see throgh the AV hole to see if there is any botton.But when using a toothpick I can't feel a click.
I tried to push it anyway to force boot to recovery mode but no success. However I installed an app that can boot to recovery successfully.
Have you tried flashing or booting LE on it from an SD Card?
Its fairly easy to unbrick the box if you decide to flash on NAND, just need the stock img file.
[hr]
Anyone with a MiniMXIII have working Bluetooth?