Own DIY Arduino Due programming error, ask for help

Hello everyone,
I own a streamlined version of the DIY Arduino Due, I’ll ARM and burning of 16U2 divided into two parts, now 16u2 has completed testing, the question now is burned into the program by 16u2 to ARM chips appear “Verify failed” I put the schematic and error screenshot made ??up, trouble you help us to see. This problem has been bothering me for one week a.
My English is not very good, please forgive me.

ATSAM3X.pdf (127 KB)

16u2.pdf (101 KB)