"un-brick" a Memup SlidePad 704CE ?

[AC Question]

Hello,

I own a Memup SlidePad 704CE. Here is some info about it:
- bar code of the box: 3700020513593 (tablet sold with headphones and an etui)
- bar code ON the tablet: 30291281002348, could not find any info about it
- 704CE written on the box AND on the tablet

Here is the problem:

I tried to flash it but it appears that some tablets might be of the wrong model (written CE instead of CET or the opposite), so now the tablet is a brick: the touchscreen does not work anymore.

My question is:

Since Memup is a dead company, and that I can not find any stock rom or anything really helping me (I am not a professionnal in that matter as you can see), can anyone help me ? I would like at least to be able to use it normally.

If anyone could provide a stock rom of this model, or a solution to unfreeze the touchscreen, it would be nice.

Thank you.