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CCS/TMS320F28023: CCS UniFlash can't unlock

Part Number: TMS320F28023
Other Parts Discussed in Thread: UNIFLASH

Tool/software: Code Composer Studio

Dear all:

              When I locat some Password in the  file f2802x_csmpasswords.asm,like above

.sect "csmpasswds"

.int 0xF5F5 ;PWL0 (LSW of 128-bit password)
.int 0xF6F6 ;PWL1
.int 0xF7F7 ;PWL2
.int 0xF8F8 ;PWL3
.int 0xFFFF ;PWL4
.int 0xFFFF ;PWL5
.int 0xFFFF ;PWL6
.int 0xFFFF ;PWL7 (MSW of 128-bit password)

then, I download the *.out file to the IC, used the CCS UniFlash (Version: 3.4.1.00012) .

But, when I download the *.out file to the IC,there have errors. and when I write the passwds int the CCS UniFlash try to unlock

The IC, and I got the error like below.

Error connecting to the target:
(Error -1135 @ 0x0)
The debug probe reported an error. Confirm debug probe configuration and connections, reset the debug probe, and retry the operation.
(Emulation package 6.0.83.1)

who can help me, tell me how to unlock the IC use the CCS UniFlash?

Thanks verry much!!