Control board for S15,DR3,D5

Please refer to the website below to see how to disassemble the miner .
 
https://www.youtube.com/watch?v=xWl9_iO9R1Y&feature=youtu.be
 
 
Please refer to the website below to upgrade the firmware to the related version.
 
https://enforum.bitmain.com/bbs/topics/3787