Tool is designed for s1 protocol only! For edl mode tool is not ready since my tool uses s1 protocol and specific commands related to s1 protocol only! I allredy have made edl downloader but it was for xperia z1c only and it sucesfully uploads preloader tot the device and that's all. For preloader command I have no analyse so can't tell how it is working. But that uncomplete tool is based on s1tool (based on raw usb packets transformed into c code
), only which I can help you is you need preloader binary signed with sony certificate, without signed binary you ca do nothing, don't waste your time if you have no preloader.
Another thing, I have decided 6 months ago to close all my work from public, reason was my temp ban which I not deserved here, so definitely all my future projects will stay closed source, that's final. Whats your phone model?