[Q] Different CID and RUU topic

I am having an issue with my phone in fastboot mode. After changing my CID to GOOGL001 from CWS_001, I was in the process of flashing the GPE RUU, but it got interrupted and it was stuck on the HTC logo for a while. I ended up rebooting the device and now it is unrecognized in fastboot, yet it still works in normal mode. In fastboot mode, it is a black screen instead of the normal white screen. I don't think anything is wrong with my drivers because everything was working alright before. Phone is still fully functional and I would like to either change my CID back to normal or continue with the GPE RUU. Any help would be much appreciated. Thanks!