Do not install V6.50 unless you have an original TL866A or TL866CS from 2016 or earlier. For TL866II Plus, use the latest V12.x from xgecu.com.
Because version 6.50 is an older release, it is rarely hosted on the primary Official XGecu Website (which focuses on the latest T48/T51 software). To find v6.50, users typically look toward: download minipro v6.50
If you strictly require v6.50 for an older operating system (like Windows XP or Vista) or specific testing, you must find it on software archive sites. Do not install V6
Connect the programmer via USB; no external power supply is typically required as it draws power from the USB port. download minipro v6.50