I followed the instructions of Lykke(many thanks for them) and installed the new firmware from pocketbook on my Inkpad 3 that I ordered from
https://www.decitre.fr/liseuses/lise...152095542.html
I do not understand why they would remove chess and Sudoku which I play occasionally. Also, I guess as many others, I am not too keen on some of these commercial interfaces.
But now, my Inkpad has been set free into the matrix.
Lykke, I thank you for the instructions and my Inkpad 3 seems to be working well for the moment being. Maybe I will read some Knausgård. Love live e-readers.