Two months ago. my friend gave a BBB(2G EMMC SYS:angstrom V2012) board to me.
I install debian8(Jessie ) into SD card,，It’s running very well.
For some reasons,I cannot but change to debian 9(Stretch) …But when I burn to sd card ，BBB unable to start.
What should I do?
6.1 is debian 8 6.2 is debian 9