I use fastboot for flashing pro1/QX1000 just fine. Why does it not work for yours?
I have no idea on the edl file. Will check if I got one downloaded somewhere, but i doubt it.
Yes, I already tried them but most of them are for flashing with fastboot and that's no oppurtunity for this device.
The required files (firehose_progammer.edl) are missing. Maybe I could use a Firehose file from a different device which uses the same CPU (SD835)?