As above guy said check battery volts.
Most flash devices including oft will refuse to read or write if bat volts low anything less than 12 v usually indicates problems
If oft will read vin or ecu info or log data ecu is fine.
As above if ecu was bricked it wont do anything no clicks nothing
Also read here
http://www.ft86club.com/forums/showthread.php?t=99171
.