[Putin]

Do a search about flashing via sd card. It eliminates the error you're getting and any other 'via tethering' or activesync errors you may encounter. You'll at least need a non sdhc 2 GB memory card, and since you already have olipro 2.40, find the radio you want, extract the radio, the radio's name normally is RUU_sighned.nbh, rename to TITAIMG.nbh, make sure .nbh is lowercase, get into boot loader and the radio should flash. Use this way because if your phone disconnects while you are flashing with the way you are doing it now, you increase the possibility of a bricked phone! From now on just learn to flash via sd and forget about permanently damaging your device.