Disconnect and reconnect the dongle. Try a different USB port or update your smart card drivers via Windows Device Manager.

Locate the official umtv2-umtpro-ultimateunisoc-v0.1-installer.exe (ensure you download from trusted sources, such as GSMHosting Forums). Run the Installer: Run the .exe file as an administrator.

If you have a you're struggling to unlock or flash, let me know, and I can give you a more tailored guide. YouTube·FRP SAM

Almost all operations in this tool (especially flashing and factory reset) will erase user data.