MSP430: File Loader: Verification failed when changing parameters

Hi Team,

I try to download software to the MCU on the target board using SBW, but I got the attached error message.
However, there is a case where an error is not caused if I set different value to the variable.

<Download successfully without error>
param.clockPrescalar = 4;
param.firstModReg = 3;
param.secondModReg = 5;
param.overSampling = EUSCI_A_UART_OVERSAMPLING_BAUDRATE_GENERATION; // 1

An error occurs if you change any of the above values.
<error occurs>
param.clockPrescalar = 12; ←Change "4" to "12".
param.firstModReg = 3;
param.secondModReg = 5;
param.overSampling = EUSCI_A_UART_OVERSAMPLING_BAUDRATE_GENERATION; // 1

MCU: MSP430
Tool: CCS v10
OS： Win10

Can you tell me the reason?

Best Regards,
Tom Liu