Silverware is acro firmware for toy quads such as the Eachine H8 mini, BWhoop B03, BWhoop B03 Pro, Eachine E011, and Eachine E011C (note that this is a BWhoop as far as Silverware is concerned). It allows you to adjust your PIDs and fly acro mode just like with Cleanflight and Betaflight.
The Boldclash BWhoop B06 is a good entry-level brushless whoop. However, it has a few problems for me. First, the motors are not good. There are reported problems of shaft collets and bushings falling off. Second, the FC has no OSD. Third, I prefer my whoops tiny, and by that I mean 65mm (okay, a smaller version is supposedly out but it’s not yet widely available). So I build a better BWhoop B06.