yes you can create a unlock patch but there aren't any way to apply it to w810 CID 50 only 49 via setoollite and this note is about flashing not patching
i think w810 cannot be upgrade to CID 51 or 52:(
In my opinion: no free way to apply patch with w810 CID50:o
bdw: don't asking how to change CID 50 to 49 because this is not possible