Hi there I have a 2015 70 model s and my mcu is starting to give me issues, a month ago it went blank on me for hours (after countless failed attempts to reset the system using the steering wheel controls)until I pulled fireman’s loop and reset it to finally start again, and now a month later I come to the car and it constantly starts rebooting with the Tesla logo showing the black again over and over again. Never starts up. I’m pretty sure the chip is the culprit and I have no issuers on removing the screen. What I don’t know is can I purchase another chip to install , if so which (model number)? And do I need it programmed after the swap? Also any upgrades I can do while it’s out? Thanks!