Guessing you're in France
Google translate your post which says - Me too my friend After 2 weeks of intensive debugging, the maj version 1008 US is perfect. FYI, it updates the version of the SUB and REAR in 0136 instead of 0133 previously.
I had the similar issue as my rear speakers used to disconnect after a while... with the update of firmware to 1008 version the problem seems to be resolved ...I haven't seen any connection issues after the latest firmware update...
Ok so, the update does indeed fix the rear speaker issue when your watching sky for example via HDMI however if you go to spotify and connect via wifi and play a song the rear speakers will not work.
Also tried youtube via mobile and via amazon firestick no sound out the rear speakers again.
So a bit of good and bad news. Can others who say it is working now check if it does via spotify, youtube, mobile device etc.