HLK-RM04 wifi shield factory reset? I have this HLK-RM04:



It came with  no catalogue or manual
all threads about it are in Chinese 
after when I found the configuration webpage and changing it to client 
it wont connect and it stopped board casting hlink wifi
how could i reset to factory settings?

After very long search I found an English manual. 



What does Trst means ?
I don’t understand what I must do to reset it!
Since no one has posted an answer, and I finally found one myself. Ground pin 10 for 6 seconds.