What tool/method should be used to convert between "Big Endian" and "Byteswapped" Nintendo 64 ROMs

[Hiccup]

I've used 64tool, but it doesn't work for some ROMs.
Is there a better tool or method to use?
What was used to create the Big Endian versions of all the ROMs that were datted recently?

[omonim2007]

I'm using ucon64 (http://ucon64.sourceforge.net/) - this is the best program for this case.

Before that I used WinAPS, but I noticed some strange thing two month ago - after converting from Big Endian to Byte Swapped format it swaps last 2 values! So I had to find out a good and accurate utility. In the end, I opted for ucon64 + uf-FOX-GUI.

[Hiccup]

Thanks for the tool suggestions. I'm wondering - is this conversion process specific to N64 ROMs or is it just generic process that can be done to any file?

[Screwtape]

It's a generic process.

[Hiccup]

It's a generic process.

Could Hxd or some other generic tool be used to do this then?

[Loggan08]

It's not generic like that, ucon64 only supports a specified set of systems.

For N64 (To convert between byteswapped and big endian) you would do this :

ucon64.exe --z64 "anyn64file" > This converts to Big Endian

to swap it to Byteswapped :

ucon64.exe --swap "anyn64file.z64" > outputs byteswapped, rename to .v64 extension.