Beginner question of firmware and C139

[david at frinet.es]

Hi all,
I am starting with this project and i have problems downloading the
firmware to a c139, i built the t191 and i'm using a FTDI usb-serial.
I use the command that is described in "Motorola C140" section:

./osmocon -p /dev/ttyUSB0 -m c140 -c  
../../target/firmware/board/compal_e86/layer1.highram.bin  
../../target/firmware/board/compal_e86/chainload.compalram.bin

and also i have used it with "-m c140xor" but when i push briefly
power button, shows it in next lines "got 1 byte from modem, data
looks like: ff .", the data are changing in next lines, some times the
bytes received are more than 1, are 2, 5, 6.
I have some questions:
Which is the sequence that have to receive the osmocon to start the
comunication with the phone?
Is posible that the compilation of osmocon has been badly?

Thanks and regards.