is a specific build released in the mid-2010s. It represents the transition period between the older, simpler SP Flash Tool interfaces (v3.x and v4.x) and the more complex, modern versions (v5.20xx and beyond). Key identifiers of this version include:

For newer devices (MT6762, MT6785, Dimensity series), upgrading to SP Flash Tool v5.24xx or higher with proper authentication files is mandatory.