First of all you should be shipping it to one of their authorized distributors in your region not China,Second it seems like your just missing their maxisys apk file so that you can update normally and why not send it to your e-mail on the tablet an executable file for that maxisys apk. third if their is a problem with other files on the tablet they should be able to correct those using team viewer or whatever remote control that works with maxisys and last of all I'm going to mention if you didn't buy maxisys from one of their authorized retailers their probably going to say unit trashed no warranty must purchase again with updates seen it before on forum. I'd get something from them stating your under warranty first before shipping. Your decision but why am I paying $100.00 for shipping if under warranty. What's the estimated turn around time stated especially if no loaner you need to be able to work in the meantime.