SD Package with Patched Firmware for GPSMAP 276cx available at
Updating is very simple:
1) Extract GCD File from Archive
2) USB connect Device to PC
3) Run WebUpdater (be sure to have an active Internet connection, WebUpdate requires it)
4) Drag&Drop patched GCD File over WebUdater window
5) Firmware flashing start
6) After Device reboot you have New Patched Firmware on board
:lol: