Official comment
Hello
You can recover a FT6050 by following the instructions from the Series 6000 Databook, page 29, section "Recovering a Device"
http://info.echelon.com/rs/echelon/images/005-0230-01B_Series_6000_Databook.pdf
If you require further assistance, you can contact our support team free of charge at www.echelon.com/support
Kind regards
Karelle