You cannot jump directly from 7.02 to 7.57 in one click. You must follow a sequential path. Diagbox Installation Issues - French Car Forum
: Supports newer PSA models that are incompatible with v7.02. diagbox 702 to 757 download exclusive
This guide explores the exclusive features of this update and provides a safe, step-by-step path to successfully downloading and installing it. Why Upgrade to DiagBox 7.57? You cannot jump directly from 7