Beaglebone Connection

I have a problem with the u-boot of my Beaglebone black. Actually when i set up Android on my Sd card, i wasn’t able to detect the serial device USB anymore .
Before that i installed Angstrom and everythings work well so the Beaglebone isn’t the problem but only the boot. Is there some configurations for the device in so far as i can’t work, and download some fichier to my Beaglebone from my computer.
Need help
thank you

USB serial is not working in Android or u-boot?

AFAIK, USB serial is not supported on the BBB android image. Android prefers to use adb, but that may not be working well either. (depending on which of the various Android images you are using)