Regarding schematics can post one for cruiser but will be too much headake do one. For moment we work on EPI flasher cable for sharp that will be similar with lg flasher cable that will be far more easier to build and much cheaper
Br
P.S: If you use Cruiser cable answer yes on message box be sure u have +9V attached and when soft ask to power on insert battery in phone. If phone not booted when inserting batt then just click power on with batt inside.