We use the MSP430F2131 with CC1101 for our wireless products. We are releasing a new product that utilizes all the memory, including INFO A Segment. I am able to write to this location using an Elprotronic USB Flash Pro 430 and a TI MSP-FET430UIF using Lite FET-Pro430 by Elprotronic. When using our functional program, written in Visual Basic 6.0, we are unable to write to location 0x10C0. It may be that we are not using the proper command to write to this location. The commands we are using are ERASE_MAIN, ERASE_SEGMENT, ERASE_ALL, and ERASE_NONE. If anyone can be of assistance, it would be much appreciated.