Flash the MDC Baseband from the Sprint Galaxy 4 to your Sprint Note 3, and your problem will be solved. You will then be able to retrieve your MSL via older methods (i.e. Connectbot, Get My MSL, etc) and access the NVM folder on your phone. Backup the phone's current baseband so that you can return the baseband back to normal after getting your MSL and/or accessing the NVM folder.
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