DRV8308: How to write OTP by spi

Dear Ti engineer,

Now, i read register 0x2a,the value is 0x18,but i do not know how to write all registers to OTP.
now i am trying as below,

Write_Register(0x2d,0x1234);
Write_Register(0x2d,0x1415);
Write_Register(0x2d,0x1617);
Write_Register(0x2d,0x1819);
Write_Register(0x39,0x0002);
DelayMs(100);
Write_Register(0x2d,0x0edd);// not clearly on datasheet 0EDD??? 
DelayMs(500);

but it does not work.

Would you please do me some favor about it?

I wil be always waiting for your reply.