Originally Posted by JimK
It's in the .msl file. Open it, go to products and double click on processor (861 in my case). The start volume is under setup.
Oh thanks, didn't know you could double click on one item in that page ! Now volume set-up much lower and just noticed my rear speakers aren't working anymore after the upgrade, will have to redo the firmware update and try again... But enough for tonight

861v4 with ID40, DSP8000, DSP5500HC, DSP5500, MC200, Panasonic P-AE4000U, SI Black Diamond 142" screen