If you're in a hurry, try these passwords first. For specific tools like the SPD Flash Tool, the password SFT123 is the official one used by the developer.
Scope & Assumptions
Comprehensive Guide to SPD Hard Reset Tool Zip Password and Formatting spd hard reset tool zip password
The official, free, and generally password-free tool provided by Spreadtrum/Unisoc for flashing. If you're in a hurry, try these passwords first
Bypass/Exploit approaches (not recommended) If you're in a hurry
It is common to find SPD tools distributed as password-protected ZIP files. This practice exists for several reasons, though it's important to understand the nuances.