Patch0dat Does Not: Exist New

If you’re running a custom script (Python, batch) that calls patch0.dat:

Error: patch0dat does not exist new
Reason: NUPS creates temporary files (like patch0.dat, newfile.dat) while patching. If the source ROM doesn’t match what the patch expects, the tool can’t generate the new data block.

Solutions:

Use this if you are trying to fix the issue and need expert advice.

Title: Error: "patch0.dat does not exist new" — Has anyone seen this? patch0dat does not exist new

I’m currently running into a persistent issue with my installation. Every time I try to launch the patcher, the process fails and I get the error message: "patch0.dat does not exist new".

I’ve tried the basics:

I suspect it’s a permissions issue where the patcher is trying to rename a temporary file (new) to patch0.dat but fails to find the source. Has anyone successfully resolved this? Any logs I should be checking?

#TechSupport #Troubleshooting #PCGaming #DevOps If you’re running a custom script (Python, batch)

Some flashcarts (like EZ-Flash Omega) create temp files named patch0.dat for save states or real-time patching. If corrupted, delete them from the SD card (back up saves first).