Hi, I have tried to boot the Pyra from internal µSD and it - almost - works.
If I press the lower left shoulder button and power on, I see on console:
U-Boot SPL 2016.11-00200-gdde7583 (Jan 23 2017 - 19:35:10) OMAP5432-GP ES2.0 Trying to boot from MMC2_2
So this means the MLO is found and starting, but u-boot can not yet be loaded.
This can sureley be fixed and is mostly a matter of when time is invested.
BR, Nikolaus