@raioxis
I think his problem is the socket or its mo connection.
@SpYkz2
If you've tried the electrical contact cleaner unsuccessfully and there's no sign of physical damage to the usb pins then it's almost conclusive that the socket connections are shot. It's actually possible to do all updates from microSD using txt commands to remove, update or add new files. I have a nuvi 1450 with damaged usb, still charges like your nuvi 40, firmware update in preboot mode or by gupdate.gcd in Garmin folder on card and all other updates easily done from the card with ldr.bin and update.txt. Once you get used to it and have the commands stored it's quite easy to do. If you brick such a unit it's toast unless you reflow the connections though.
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