Ok so it's really hard to make it... I haven't Ubuntu... I have flashed 1.3.0 on 1.3.6 but the process here is too... But if it works... I will think on it...

Good news, but IS ire possible to flash the 1.2.1 firmware directly on web interface ?

Unfortunately, after 2 weeks working perfectly, the 2,4GHz stops just now... 😔 I put a weekly reboot and hope it will be enough to never have the 2,4GHz goes down... If someone have another solution...

I can't remember where i have found it but probably on this forum, or on Google search...

@SirT Yes you can downgrade. I have tried to downgrade on 1.3.0 but the firmware wasn't stable for me...

@SirT Yes me for the moment all works since around 2 weeks