Update your Grandmaster 40/50 by WiFi:
Tap 'Software'> 'Network' in the system menu. Available WIFI networks will be displayed as gray buttons and their names (SSID). Choose yours and connect with your network code and 'Enter'. A reboot is needed by 'Yes'.
The code will be saved for coming updates.
After reboot tap 'Update' in the system menu . It starts the search for the latest update. Follow the instructions on the display. The update is complete after rebooting automaticly. Do not unplug the device while this procedure. The update process takes only a few minutes.
'Stockfish 10', 'CT800 v1.34' with option Skill Level [Elo] and Contempt, 'Claudia 0.5', misc.
(9th of April 2019)
Finer skill level gradation for 'Texel' 0-40, additional menu language in French, bugfix 'player mode'
Extension 'Player mode', advanced indication of misalignment, search time optimization when 'Time expired', optimization move hint, misc.
Symbol-oriented revised menu, engine 'Stockfish 9'
Another 2 chess engines (CT800, Texel), listed engines incl. version number, misc.
Reset settings, bugfix
Extension of 'Position Mode', improved time management, 2nd time control
6 additional opening libraries
'Stockfish 8', 'position setup' also with empty board, menue 'network' optimized, time mesurement of engine optimized, system update, display adjustments
Engine-Info, Game options, Display of Engine- and Player's name, misc.
'Stockfish 7', parameter Contempt, display adjustments
Additional engine (MadChess 2.0), Position evaluation
Bugfix 'White from the top' and 'EnPassant'
Configuable audio channel, misc.