Article L217-20 of the French Consumer Code
With regard to updates that are not necessary to maintain the conformity of the goods, the seller shall comply with the following conditions: 1° The contract authorises the principle of such updates and provides a valid reason for them; 2° The seller informs the consumer, in a clear and comprehensible manner, reasonably in advance and on a durable medium, of the planned update, specifying the date on which it will…