Also, the System Reference Manual underwent minor changes that were released on May 20th

Also, the System Reference Manual underwent minor changes that were released on May 20th as version A5.5 Thanks Gerald!
(https://github.com/CircuitCo/BeagleBone-Black/blob/master/BBB_SRM.pdf?raw=true)

hii, I had a problem with BBB. When connected to system or powerup, it is not showing flash memory in system and USER lED’s are not blinking. I am now to BBB and don’t know what to do. can anyone guide me ?