CUBE Talk9x U65GT problem after ROM update

Hello,

I have CUBE Talk9X U65GT tablet and I have tried to update ROM to custom ROM: Resurrection Remix. (https://www.getdroidtips.com/resurre...-cube-talk-9x/)
Everything went clearly and I had my tablet with new ROM installed. After installing this ROM I have notced that storage memory for apps didn't change and still is the same - only 2 GB.

Then I have tried to increase storage memory for apps. I have done everything according this tutorial (http://freaktab.com/forum/mtk-based-...GT=&viewfull=1).

Almost everything was OK, except that after this modification my internal SD memory was corrupted, but I have managed to fix it by loading tablet in TWRP Recovery mode and then I have wiped all data.

After this I couldn't turn on my tablet, it only showed boot image and did nothing.
I have tried to restore my backup with these softwares: SP Flash Tools and Mtk Droid Tool. But I couldn't restore my backup.
After I have failed to restore backup I tried to format flash, because I thought that it would let me to restore my previous backup. But after formating flash my tablet won't turn on.

When I connect it to my PC it reconnects 3-4 times per minute( i can hear the sound on the PC when tablet connects or disconnects). Mtk Droid Tool doesn't find my tablet. When I try to restore backup with SP Flash Tools it shows ERROR messages that I have connected different model than the backup is suitable for.

Can anyone help me with this problem?

Thank you.