Hi   My RNS-510 columbus today has started to go through a reboot/restart repeatedly - so it switches on to the splash screen and pauses for about 10 seconds and switches off and then it will cycle through again and again.   I've done some searching -   I've tried a SWL  fix, not sure that if I've done it properly though -    I've tried disconnecting the battery, nothing -    I'm now downloading a firmware update to try also - but its still downloading.   If anyone has fixed this the