Beginner question of firmware and C139

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.