https://help.boox.com/hc/en-us/community/posts/30851694487188--For-**********-Error-support-number-by-phone-dial-l-1-888-987-7249https://help.boox.com/hc/en-us/community/posts/30851694487188--For-**********-Error-support-number-by-phone-dial-l-1-888-987-7249