The "fix" is part of the RC4.1 upgrade path. It is intended to
unapply all fixes applied through System->Utilities->Fixes:
If however you have flashed 0.1RC4 or the experimental releases and
applied any fix or patch, you have to manually removed them before upgrading.
The "fix" will not be show as a fix. "fix" was referred to in the instructions as an example file name given for the saved file.
As per the instructions, after applying the "fix" you can flash RC4.1.
When executing the "fix" the output will be:
-if an OK is printed without any further output, then applied fixes have been unapplied;
-if nothing is printed, there is no need to unapply fixes;
-any other output means that some error was made following the instructions and the "fix" didn't succed.