[quote user="Chester Gillon"]the SIGNATURE_MEMORY GROUP is[/quote]
None of the lnk_msp430fr5739.cmd files in my installation of CCS 5.5 have a group named SIGNATURE_MEMORY. I agree that the warning can probably be ignored. Still, this is an indication of a problem in the linker, and I'd appreciate if you could send your project so we can reproduce the error.
[quote user="Chester Gillon"]if you program the SIGNATURE memory area to other than the default fill ox 0xffff you may no longer be able to access the MSP430 device via JTAG or BSL.[/quote]
We who watch this forum are unable to answer detailed questions about the device. Please start a new thread in the MSP430 forum.
Thanks and regards,
-George