It is possible to flash a ROM without an SD card, but not through the Xperoid Toolbox utility. It only uses "adb push" to transfer the ROM into the sdcard partition. I read something while ago that might help this sort of thing:
I'm planning on implementing this in the future if I have time. My Linux machine's acting a bit weird so I'm using my shared desktop temporarily. My dad pretty much ruined the Windows 7 partition with his random bloatware.
Hey brian, my device and me could be your rat as my SIM and SD card slots are gone and im Free till may, I can help in the development too but first you got to help me here
I cant manage to list my device through ADB shell, it keeps saying Error:no device found, but the fastboot and fastboot commands work perfectly, like fastboot devices shows me ? fastboot, but ADB commands don't work as ADB cant list my device, what am I doing wrong?