never mind i did not make backup.
I don't know what that means.
If you followed the video and you have the correct files then you should be able to flash. The problem remains that you don't know if you have the correct files. Your phone compared to a samsung, there is no comparison, samsung is made by a well known manufacturer that employs standards, you can't say the same about your phone.
If you look at the video there comes a point where you have to remove the battery, easy with the samsung, but not easy with yours as it is soldered. If I was having to do that I would connect a temporary on/off switch so that I could switch the battery off and the on again until I finished the flash.
The other issue is without your phone it is very difficult for anyone to know what is really going on.
Guess that comes from thinking you know what your doing and then just jumping in a second guessing what you are supposed to be doing.
This is totally a futile exercise unless you know you have the right rom files. With this much time and effort it is cheaper to just buy a working phone.
I send it back to Factory, and they fix the issues.