Guys,
I'm back to give my feedback on how I managed to solve the problem.
First, I couldn't solve it using the official Armbian images, I used an alternative image from the "amlogic-s9xxx-armbian" project maintained by ophub on GitHub.
In this project I used the version for the SOC s905l3a, more specifically the image "amlogic_s905l3a.img".
After using this specific image, I created the bootable SDCard, and then I inserted it into the box and used the remote control to be able to boot, you need to click the right arrow button while the box starts.
After that I was able to use the system directly from the SDCard, most things worked well, I just couldn't install the system on the internal memory, I had to continue using it directly from the SDCard.
From my research, this box is nothing more than a modified Chinese router, the router would be the e900v22c. It was by researching it that I was able to understand the procedure to install Armibian.