We can close this thread, it is working great, my APP can upload and download files to public folder , yes, we can use FireBaseStorage without need any authentication. GREAT!!
The B4A Ver 6 and FireBaseStorage are amazing, I did some simple test, I turn off my Internet, pressed "Download Public" and wait one minute, later I turn on the wifi, and woala, the file starting to download, etc. finally, a very good tool.
, now I will migrate my stuff to firebase and forget to use FTPS
Erel, B4A Ver 6 and FireBase are very easy to put to work together. NICE ONEEEEEEEEEEEEEEEEEEEE , I am so happy like a dog with two tails!!!!!