HELP WITH THE ECS tr10rs1 TABLET TO FIND ROM

Greetings friends, I have an Elite Group tablet. In my country, Venezuela, the government distributed them to students, as they did in Mexico. I want to update the Android version because it's currently running 4.4.4 and won't open Google or the Play Store. I can't find a compatible, more up-to-date ROM. This tablet has an Intel Atom processor.