This may work:
nvm install NEW_VERSION --reinstall-packages-from=OLD_VERSION
For example:
nvm install 6.7 --reinstall-packages-from=6.4
then, if you want, you can delete your previous version with:
nvm uninstall OLD_VERSION
Where, in your case,
NEW_VERSION = 5.4
OLD_VERSION = 5.0
Alternatively, try:
nvm install stable --reinstall-packages-from=current
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