@diversola
I'm unsure why you think the nuvi 58 is 'bricked'. You said it it works...right? So i'm guessing you mean it turns on, boots up and navigates normally. What i think you're meaning is that it doesn't have normal communication with a computer and can't be seen in Mass Storage Mode by Windows Explorer or GarminExpress, correct?
When a device is (soft) bricked, it certainly means that MSM is unavailable however additionally it doesn't boot up when powered on. Typically either freezing on the logo splash screen, bootlooping or turning itself off before booting fully.
So it may be that the USB connection is not good. Garmin devices (including and particularly nuvi 5x series) do have a weakness in the USB socket mounting which results in the soldered connections to the PCB cracking - the result being that either data connection or charging ability or even sometimes both of those functions are lost. Try connecting to PC and then gently move the plug connection in the device's socket to see if it's recognized. If it's only a loose socket it's not a difficult task to reflow the USB socket connections. There are plenty of YouTube videos on how to do that.
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