After @degmoura erase reg41 he stuck on white screen with black dot ( calibration screen) and when he press dot with finger nothing happend and still stuck on calibration screen, but when he use pen for press dot calibration procedure finish and nuvi now work and also GTM work.

If anybody have problem with calibration screen (white screen) here is video:



If anybody don't know how to hard reset nuvi here is video:



I hope this help if somebody have the same problem with nuvi 2495