the “sister” model of Boldclash's BWHOOP

it now is also supported by Silverware. Instructions similar to BWHOOP, but use Eachine E011 Silverware branch instead

The larger programming pads on the e011 boards are marked in reverse, they need to be connected accordingly. The header pins ( not connected ) at the top of the board are marked correctly.

The factory firmware is not protected, and it has been extracted. That means it can be flashed again to the quad.

If you're trying to flash the E011C (Santa edition) then checkthis rcgroups post!
This board is slightly different than the E011 in that it uses different pins for the radio and for two of the motors.