Fastrack Supreme Firmware upgrade


i tried download firmware 7.2 to Fastrack supreme, original firmware was 663_09gg.FSU001.
I used hyperterminal 1K Xmodem to download.
First i tried download file dwl_port. Everthing was fine, but in the end of download
modem sent message *** WRITE ERROR ***.
Since this, only red LED shining and modem doesnt reacts to any AT command.
I tried download firmware with windwl, but without sucess.

Thanks for any suggestion to return modem back to live.


Thans to this post