Hi , I am trying to program MSP430F2254 via BSL . The mass erase command erase information as well as main memory but i only want to erase the main memory.I have tried by using main memory erase command and segment erase command but i am getting NACK as response . I am able to erase using the mass erase command though. can someone please guide how to erase only the main memory. I have tried reading the value at the address of LOCKA bit but still NACK as a response.