Due to an April 6, 2019, GPS rollover Event, some C-MAP chart users will need to download and install updated software to ensure proper functionality of their Lowrance sonar/GPS units.
If you have one of the following Lowrance units a software update is required: Lowrance HDS Gen1, Lowrance HDS Gen2, Lowrance HDS Gen2 Touch, Lowrance Elite HDI, Lowrance Elite CHIRP, Lowrance HOOK, Lowrance Hook2 (9- and12-inch models only).
The requisite software update can be downloaded from here.
