ProTool v6.0 introduced several advancements for HMI engineering:
: ProTool v6.0 SP3 supports STEP 7 versions 5.1 SP4 through 5.3. Pro Tool V6.0 SP3 + WINDOWS 7 - SiePortal - Siemens Siemens protool v6.0 download
: Free-of-charge updates (e.g., from v6.0 to v6.0+SP3) are available on SIOS for users who already possess the original CD-ROM or Disk 1. Compatibility and Migration PLC programming with SIMATIC STEP 7 - TIA Portal - Siemens ProTool v6