Dayun Z1 user firmware urgent update

Dayun Z1 user firmware urgent update
Update address: http://download.zigminer.com
Version number : 20180930
Update method: Brush U disk (large upgrade can not use upgrade package)
Update content: Improve the stability of the system, the read, write and damage rate of the u disk is greatly reduced
Note: If the overclocking 900mhz firmware has a falling phenomenon, please use the 850mhz firmware.
Please send the dealer to the user, and update it as needed.