Uninstall any previous Mediatek or Preloader drivers before installing V2.0 to avoid conflicts.
Are you getting a (like 2004 or 5054) in SP Flash Tool?
SP Driver V2.0 Install.rar Primary Function: Android USB Connectivity / Flashing Assistant Compatibility: Windows (XP, 7, 8, 10, 11)
: Installing unverified or modified drivers can cause severe operating system crashes, boot loops, or permanent hardware damage (bricking).