Hi guys, sorry if this has been asked before but I've scoured the internet looking for some answers, I bought a Garmin etrex 32x a couple of weeks ago and decided to update it this weekend, I bought a SanDisk Ultra 32Gb SD card, class 10, not video enabled, I thought things were off when it took over 4 hours to update the maps, now I have an issue where the unit will freeze when booting up, I have to take a battery out to reset it and then it boots OK, I did take the card straight out of the packaging without formatting it, I'm using Duracell NiMH 1300mAh batteries, any advice?