If you have RK3188 based mini pc or stick and you are trying to update the firmware, you have to use RKBatchTool.exe.
Now you will also have to install USB drivers for RK device but when you do all of this , and still RKBatchTool 1.7 exe doesn’t recognize your device, what to do?
Well, easy steps-
In folder with RKBatchTool there file config.ini
Open config.ini, find string