Cashe size (63 -> 255) didn't save

[Dislucky]

Windows 7 Pro.
S3D 3.0.2 licenzed.
Start program as Administrator.
Menu -> Tools -> Firmware Configuration -> Communication -> Cashe size
Change 63 to 255 as recommended.
Save.
Exit.
Start it again.
Cashe size remains the same -- 63.
Is it possible to fix it manually in config files, or what?
--
Thank you in advance,
Andrew

[CompoundCarl]

This video explains it: https://www.youtube.com/watch?v=NYPUAqT4UyI