mxq pro 4K S905W android 7.1.2

[shimo_dd]

Hi All,

I just got a mxq pro 4K S905W android 7.1.2.
In order to use an app (which detect root), i have to remove the pre-installed root. By looking at some forum i found a solution which consist to install superSU first to be able after to unroot my device.
After I installed SuperSu i rebooted and got stuck on "android" logo.. I tried a factory reset from recovery menu but nothing changed...

Now i want to try to install a fresh FW but i'm not able to found it out, i can only find FW for S905 or S905X but not for S905W.
Can someone help me on this issue. Or at least point me to the right FW (by the way i don't care to have android 7.x, 6.x is Ok).

Thanks!

edit: I tried to install S905X FW for android 6.0, but it failed. I think because downgrade are not allowed.
Do you think i can install FW for a different but really similar box like w95 tv box (found 7.1.2 fw for it)?

[AZW]

Firmware released by AZW is only for their devices. that's to say, W95's firmware is only for AZW W95 box.