It was password protected for a reason. Also if you need to redo the RUI you may as well reinstall all the networked system software (I assume the Networked one as why else would you need RUI?) to make sure it all works as the firmware you get may have a version of RUI incompatible with the version of other firmware currently on your copier.
So load the relevant firmware into SST (system software (N version), boot rom (N version), rui, language) and try using the ALL option.
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