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CCS/TMS320F28335: C2Prog Unlocking target... failed (wrong key)!

Part Number: TMS320F28335


Tool/software: Code Composer Studio

Dear team,

My customer is using 28335 with C2Prog. He did not program the password.

But C2Prog showed the following information when connected the custom 28335 board.

Please help.

*** PLEASE RESET TARGET IN SCI BOOT-LOADER MODE ***
Connecting with target (autobaud)...  OK.
Bootloading...  OK.
Connecting with target...
-Chip ID: 0xEF
-Chip Rev: 0x01
 OK.
Unlocking target...  failed (wrong key)!