I own an T-Mob HTC M8. I found that my phone has a dead pixel and I have initiated a swap service with HTC to send my old device and get a replacement device.
But the problem is I have my bootloader unlocked, S-OFF and have converted my phone to GPE. I have a few questions before sending my device to HTC.
I will be returning back to stock running the T-MOB RUU. After running RUU I will re-lock the bootloader. The only thing that is worrying me is I am S-Off and I know it is not a good practice to change it back to S-On. Am I good to send my phone for warranty after I run the RUU and re-lock my bootloader. Or do I need to do anything else that would help me save any additional costs that may be issued by HTC because of my warranty being voided.