Hi,
Today, I reverted to 1.00 firmware : success.
Problem has gone ... excepted :
- NTP can't sync the correct time (missing offset of 1 hour => gmt+1 (+1 for summer, Belgium) = +2 ... => have to manually set it without NTP ...)
- guest account problem still here
My Synology works fine now, and live cam too.
Happy with this old firmware : I will avoid any further upgrade of stupid firmware.
Thanks for all.