hi, i'm new to this forum, just got my cube u23gt. I just want to clarify if its normal with this unit that when I press the power to put the tab to sleep & press again after about 20 secs, I wont be able to awaken it in one press of the button.  it takes 5 to 6 short & long press to turn it on & when it does, it boots like its been shut down.  but if I set  the leave wifi on to always & press the power button for the tab to sleep, I can re-awaken it even after more than 20 sec of sleep.  doesn't bother me much except that the batt. will drain coz of the wifi being constantly on.  I already tried upgrading the firmware to 1.04 w/c I got from the cube website (as advised by merimobiles) but the problem still persist.  Is this a defective unit?

Hi admin, thank you for advices how to reflash the tablet, but its no my problem. I have made successful reflash to casty cube 1.03 and 1.04 many times, but evetytime tablet worked good (i installed apps from play, used skype videocalls, office, browser, i.e.), but when i tried to play video, it was immediatelly frozen, i was able to switch it off by pressing pwr button for 10 sec, and then it does not start (i tried start for many times - there was always only the cube - nocube - no passion on the screen for long time), Then i reflashed firmware and it worked again - until i tried to play video. This cycle i did about 20ty times.

And now read carefully please: Im not sure about right procedure to enable recovery mode, when I do flash, I connect the USB to both tablet and PC at first, and then i press pwr+vol+ button together - it works (RKbatch device got green). When i tried to enable pwr+vol+ and then connect USB, i get only dead android on the screen and computer did not find any device. Also, how is it? There are many people on the internet, who says it works. But I have to use another method - strange!!!

Do you have downloaded the original firmware from 51cube? Could you give me a link to download it from you, please? It is impossible for me to download it from 51cube.com - it really does not work. This is the last chance for me to try original firmware.

Hi  foox2k.

I am pleased you are satisfied with your cube u23gt, I was too, but only for 3 weeks, I mean this tablet is very nice and powerfull, but now , in my oppinien, I have hardware problem with Mali400, because I canot play any video, when I try its completely frozen. I mean, that it cant be SW problem, because a tried 3 different roms and always there was problem with playing video. I will try to send it back to china - cube-stores.com. Good luck with your tablet.

i tried only that from manufacturer, i will try another one, as you suggest.(But the player from manufacturer worked for 3 weeks good. it played full hd videos fine).