Only need free tethering

So I just got my second replacement device. The first was acting goofy. I just dropped the second one and cracked the screen...thank god for the one time free screen fix...which is actually just a replacement device mailed to you. The current (cracked screen one) is modded. I have been finding my device doing random reboots or getting laggy.

So on to my question. Which ROM is as factory as possibly but free tethering enabled?