in original website i found 3 version .
1- 20180930-stable
2- 20180930-overclocking
3- 20181015-stable
Which one is more profitable?

I want to use your advice
my version is20180926, Where i can find 20180930 or higher?
Change the value of auto_frequent from 0 to 1:
"auto_frequent":"1"Change the value of frequency from 900 to 950 or 1000:
"frequency":"900" or
"frequency":"1000"Only do this changes after you upgraded your firmware to version 20180930 or higher.
Version 20180930
https://drive.google.com/drive/folders/1Y1YXEgEnIFVnmzmD7PaTAMrVEDikTrfR