There is no way to upgrade the firmware. The strap slips through a spacer at the top of the bar, but the strap easily pops out of the slot if the strap is not held with tension. The logo is gratuitously placed, stamped in the metal, and painted in large gold letters. Im building a small rig and needed a basic power supply just for the motherboard and CPU, with enough headroom that adding on a few things in the future wont require me to buy an entirely new PSU. These are way more comfortable than any others I own! (also theyre adjustable to a degree for sloped/imperfect floors) Its so easy to put the bike into this rack. However, the first pair of beatsx I had eventually died and would not turn on or charge. And different size ear pieces . It?s structurally unsound. 5mm audio jack for your phone or other device.