Hey guys! This week I bought an Humminbird Helix 5 chirp di gps g2 from Amazon and it came with the 1.540 version of software, that version only had feet and fathom as depth units so I decided to update the software to 1.640 following the Humminbird.com provided steps. The first time I tried to update the software the sonar rebooted, then, a pop-up appeared asking me the asking me if I wanted to update the software to 1.640 (I had already been through those steps) so I entered the sonar menu and encrypted the micro-SD card, after that, I tried again, but this time, a couple seconds after starting up, it said "SHUTTING DOWN..." and it shut down and started again, then it keept doing this until I plugged it out. After plugging it back in, it kept doing the boot-shut down cycle continuously. At this point, the only things the sonar does are booting and shutting down after a couple seconds, then it boots again, without pressing the power button. Any ideas of what could I do?