Default Slim rom for a E-boda A480 tablet

Could it be possible to create a ROM for this tablet? And if so, could someone please tell me how to do it? I have one of these tablets and I think I bricked it trying to switch the 4.2.2 preinstalled with a 4.1.2. The device came pre-rooted but there was no custom rom for it on the web so, I tried one from a tablet with almost the same specs...my bad. So, if somebody has an idea about how to solve my issue, please do so!
Keep up the good work!!!