Let me list the exact steps I have been following :-
1. Backup tomtom to folder on PC
2. Erase the SD card, but do not format it
3. With SD card inserted into PC, Copy the 950 map folder, extracted files from 9.702 cab and Fastactivate.exe to the SD card root directory
4. Copy ttgo.bif from tomtom backup on PC to SD card root directory
5. Remove SD card from PC, and insert into tomtom unit
6. Start tomtom unit and allow to initialise all the way
7. Connect tomtom unit to PC and select 'Yes' to connect to PC
8. Navigate to SD card storage using Explorer
9. Launch Fastactivate.exe from SD card and run options 1, 2 ,3 then Quit
10. Eject tomtom and allow to reboot.
Please correct as you see fit.