Systems and methods for over-the-air firmware distribution to battery-powered devices are disclosed. The load-bearing structure comprises a first and a second supporting side element which extend along opposite sides of the seat and are interconnected to each other by a transversal element which extends at the junction zone of the seat base with the backrest. Program logic is provided so that the circuit is configurable for odd, even or half integer division by detecting changes in the bit sequence between 0 and 1 and selectively deleting the first half clock cycle when a change is detected. When set, the front segment is even with the supporting surface and when activated the front segment is raised causing the front door panel to pivot closed and become locked in place when two locking feet located on the bottom of each leg engage a locking channel on the underside of the chamber.