Having used these tools myself, I can pass on some practical wisdom gained from trial and error. Following these tips can save you hours of frustration.
Re-verify the source files, ensure you have double the file size available on your PS4 HDD, and rerun the merging tool. Conclusion and Next Steps pkg merge ps4 tool
Drag and drop the folder containing your PKG pieces onto the pkg-merge.exe program Github (1.2.5). 2. Simple PS4 PKG Merge Utility Having used these tools myself, I can pass