Honestly, I think you could eventually answer in such a condescendant way if you were really bringing some information I missed.
But, for your information, my box doesn't exactly fit one of these, as it is, like I said, labelled MX3 4G.
Opening the box, I found it is Netxeon M82 V4.0 S802 AP6330/2G/8G, which is some kind of noname hybrid box with same design and kinda same hardware, actually it actually seems to me some kind of MXIII plus with S802 chipset.
I tried both your release, S82/S82B/S82H/MXIII/S89/S89H which would be the logic one according to box name and chipset is not booting (filesystem corruption has been detected blabla...) and MXIII-PLUS/MXIII-G/PROBOX2-EX-PLUS boots up, everything works fine, except the shutdown/startup.
I actually also tried older of your firmwares, I actually spent hours trying lot of combinations, so it's always nice to read this kind of answer when you try many options to avoid bother dev with stupid questions. I even tried S82 release with MXIII-plus dts, but same filesystem corruption message.
Which is why my last post was asking "Can i extract the bootloader from firmware and flash it to my box ?" which was maybe not so clear english, I'm sorry if it's the case, but not "what should I flash on my box".
I actually got the bootloader.bin from a working android firmware (actually the 115k4 one which is the one actually flashed on my box with power on/off working), the only question I have was how to incorporate it in your latest MXIII-PLUS/MXIII-G/PROBOX2-EX-PLUS release running neat on my box.
But anyway, I'm sorry to bother you if my questions still seems stupid, I'll leave the box as is or try to find back my old working openelec release. Thanks.