Hello Furuno forum members. Please be aware that Furuno has just released v25.11.1 for TZTXL. Wifi is the best upgrade method. We will be posting the USB version of the upgrade and updating our posted software history soon. This is a very minor release to address a few concerns about fan noise on the TZT10x and TZT13x. Like changes that were done for other units in prior versions, we are now adjusting the TZT10x and TZT13x as well. While all units can receive the update, only the 10x and 13x will have any real change in operations. Do no feel you need to madly dash out to get this upgrade, it is very minor. I recommend waiting unit a very convenient time to update, if you update.