These mx boxes mostly use the same chips or a variation of close to the same. Disposable China boxes, BUT don't get me wrong there a good little box!
They are fairly easy to work with and work on and even to fix when you brick them! You need a male to male usb cable, don't worry about it you don't have one you say,
Ok find 2 usb cables lying around they must be regular data usb cables not charging usb, charging usb only has power not data
Ok carefully strip just the outside shell a very gentle knife cut all the way around it be very careful not to cut the inside wires or there cover
Now strip the tip of each wire
Now just match color to color some cables have one color different like white to yellow etc don't worry all the rest match and your just left with those wires so it's easy to tell
Now for a good job solder the connections then electric tape the ends now put heat shrink tube over it i prefer the heat shrink tubing with silicone into it nicer than the regular plus you can form a nice round tip on the end if you slide it on after wards but I recommend putting the tubing on before you connect the two wires and make sure it's a little bigger so it can slip over the wires
You must make sure that you keep the cord very short or it won't work just enough to go from the pc to the box and allow the box to sit next to the pc or laptop!!!!
Now get the burning tool i am not sure of the links look under my post i made my first brick make sure it's the latest version of the software
Now get the latest version of the firmware update libreelec or the normal android must be the correct format and file if it's not a single file or has multiple files it's wrong you will need to unzip it so make a folder for it
Now start the burning tool it's Japanese the second tab switch to English now first tab load the firmware update from the folder, when it's loaded hit start don't mess with the options
Now plug the cable into the pc and your box you should hear the sound of the pc detected something like when you insert mem cards etc don't worry about anything but the program as long as the program picked up the drive and started the process everything is fine it should take 5 10 minutes
When done don't hit stop unplug the box then hit stop and shut down the program
If the box wasn't detected by the pc try the reset button a few times you don't want to open the box if you don't have to it has a sensitive wire from the board to the lid that will kill the remote control if you break it I broke mine and soldering it back on didn't work
Plus the electronics are very delicate and shorting the pins is very very dangerous if you don't know electronics