Hey Austin,
Sorry for the late reply.
Yes it is possible to login to the UR5 robot this way.
What do you want to do exactly? Do you want to use a fresh installation file?
https://www.universal-robots.com/articles/ur/resetting-the-defaultinstallation-file/
Or do you want te replace the image with a fresh one?
https://www.universal-robots.com/articles/ur/how-to-replace-flashcard-in-cb3-and-e-series-robots/
NOTE: Reflashing your SD card or USB stick will delete all your programs and calibration files, make sure you always have a full backup before doing any memory replacement or image re-install.