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yup got it working. I ripped open the usb-serial converter that i had been using and turns out the chip inside was of some chinese make and wasnt compatible with the ftdi_sio module. After a while i remembered that i had an old serial to ttl logic converter which also happens to be a serial-usb converter. It uses a silabs chip compatible with cp210x. Although i was quite skeptical since it uses a max232 IC to convert the serial signal to ttl levels. But anyhow i connected it and it worked right away.

On a side note though, will the max 232 IC cause me to miss some scans??