@E-Z-Tux idk the chip manufacturer for this tablet but research this:
if Mediatek: bootrom bypass & sp flash tool
if Qualcomm: EDL mode & Download tool
@E-Z-Tux
Yes @arubislander is right:
https://askubuntu.com/questions/761070/cant-install-ubuntu-touch-on-bq-aquaris-m10
Here is the links you need to put ubuntu touch 15:04 on your tablet. After installing this, the ubports installer should work.