Removal of certain map files on internal storage in .System Folder

[dragerboat]

Hi guys quick question. So i have the Garmin Nuvi 58LMT and i`m trying to free up space on the internal storage because its 99% full. I want to install my maps on my 16gb micro sd card instead. I have access to the .System folder and i was checking in on you guys if you know which files i should remove without bricking the unit. Thanks in advance fellas.

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[Garman_Nuvi]

@dragerboat
Looks like you already have the latest USA & Canada maps installed.
Garmin Express will normally ask you to use a SD card when the device capacity cannot cope with the update and split files between the device & SD card.
What are you hoping to achieve by removing files from the device ?
If it is space for something else then the obvious is move the gmapprom.img & gmapprom.unl to a folder called Map on the SD card change their names to gmapsupp.img & gmapsupp.unl