Y lo he vuelto a intentar y ahora me poner esto:
<ID:0/009> Added!!
<OSM> Enter CS for MD5..
<OSM> Check MD5.. Do not unplug the cable..
<OSM> Please wait..
<OSM> I9000XXJPU_PDA_middle.tar.md5 is valid.
<OSM> MODEM_I9000XXJPU.tar.md5 is valid.
<OSM> GT-I9000-CSC-MULTI-OXAJPU.tar.md5 is valid.
<OSM> Checking MD5 finished Sucessfully..
<OSM> Leave CS..
<ID:0/009> Odin v.3 engine (ID:9)..
<ID:0/009> File analysis..
<ID:0/009> SetupConnection..
<ID:0/009> Can't open the serial(COM) port.
<OSM> All threads completed. (succeed 0 / failed 1)