i have a x7 too. and its firmware is 3.11a. i written in wechat with fs. there is no support comma seperated paramaters in password field. they sent to me this firmware, 3.11a. now i learned there is newer version too. i wonder is there xnsub support in v4? i cant add #xnsub at the end of pool url. also i wonder is there any overclock option? and how?

here is my fw: https://ibb.co/j4ZBM0J