My experience with the M90 is not good.Purchased it online from Onyx Boox in March 2011, it subsequently failed bigtime and was replaced in September 2011. It failed again in July 2012. Nothing with it works. No response with stylus therefore cannot turn it off, have tried reset routines all to no avail.
I am unable to get any response from "firstname.lastname@example.org". They will not even acknowledge recipt of my emails.
Can anyone help me. Finally what a contrast to my Apple iPad 3 and apple support.