I received a second handed tablet recently, but it came with a custom formware that had some problems.
I proceeded to remove it and flashed the stock one but came across two problems. If I try with adb sideload it's telling me that the signature failed and won't install.
If i try with the .zip file it says Failed to mount "/aboot" and won't install it. I tried with different firmwares for all the different versions of the model but without success
The tablet is a Mediacom SmartPad i10 3G, sadly I don't have access to further informations about it since I can't boot. Also, the tablet won't recharge and actually lose battery when plugged even if it was turned off before plugging it and now is at 2%.
How do I fix this situation?