Dear elmamuas,have you try the youtube link:there is a link to download the firmware for your micro sd card, there is instructions to do it, try that and let me know if it works for you, that link does NOT work for the gs701 WITH the home button, maybe works for your tablet without the home button, give it a try and let me know. try to find it in youtube and there is the link with the firmware ready to use, in this link does not show the link you need, so go to youtube directly and look for the video, the video does not show how to use it, but in "show more" are the steps, good luck.
I am also having the same problem of touch & wifi not working for tablet gs701b without home button. please tell me the solution. I ave tried any firmwares. So pl tel me where I can find the official or original firmware that works. please please... I will be very much thankful to you if u help me