MSP430G2744: Cannot flash/debug custom target board

Ubunutu 20.04

CCS 11 / Uniflash 7.2

MSP-FET, Tag-Connect SBW connection to custom board.

I cannot flash or debug my custom target board based on the MSP430G2744 using the MSP-FET. These are the steps I have followed:-

Uniflash

• target board powered - no device detected (manual detection)
• external power removed from target board - manual detect reports MSP430F2272_G2744. Press Start and it just sits there showing the spinner / working icon and nevers moves any further
• external power removed from target board - manually select the MSP430F2272 and try to lash the board and it reports ERROR] MSP430: Trouble Writing Memory Block at 0x8000 on Page 0 of Length 0x414: Could not write device memory

CCS 11

• target board powered - F11 reports MSP430: Error connecting to the target: Unknown device
• external power removed from target board - F11 reports MSP430: Trouble Writing Memory Block at 0x8000 on Page 0 of Length 0x418: Could not erase device memory

I am running out of things to try. Does anybody have any other suggestions?