unbricking – Give me back my dead Tablet (Is it blocked?)

My tablet died from one minute to the next. I can not turn it on and it does not connect to the computer. I can not even connect it to the computer when I run SP Flash Tool.

Device Information:

  • Pipo N7
  • Android 7.0
  • MTK8163A chipset
  • Rooted with Magisk
  • Custom Recovery TWRP

This is how it happened:

The tablet was connected to the PC and I was trying to insert a file with ADB into my external SD card. I received an error message that the permission denied. I tried to do the root of Adb and push again I still got the same message. I tried it for the third time and I received the same message. After this third message, I discovered that the tablet was turned off and that nothing I did was able to turn it on again.

I am running the rooted device for about 2 weeks without any problem. The only change in the last few days was the recovery of TWRP Custom, which I added about 2 days before the device died on me.
The device was 95% charged when this happened.

This is what I have tried:

  1. I tried a variety of hardware buttons for a long time, like up to a minute. for example, Power + volume UP, Power + Volume DOWN. with and without being connected to the charger.
  2. I tried a few different chargers.
  3. I tried putting the tablet in the freezer and then loading.
  4. I tried to warm up the device and then I loaded it.
  5. I tried it with a battery.

I have read many publications about this, but nothing I tried helped me.

It seems to me that the device is dead, not that there is a problem with the load, but I can be wrong.

Please, any help with this would be much appreciated. I would also like to try to find out why this happened and to repair the tablet.