If Windows fails to recognize the phone in Fastboot, try using a Linux environment, as it often handles old driver protocols better.
Navigate to your external SD card, select the stock ROM ZIP file, and swipe to confirm the flash. htc one m8 stock rom updated
Go to Settings > About > Software Information > More. Tap "Build number" 7 times. Go back to Settings > Developer Options and enable USB Debugging. How to Find Your Specific Stock ROM If Windows fails to recognize the phone in
HTC One M8 Stock ROM Updated: A Comprehensive Guide to Restoring Your Device (2026 Edition) try using a Linux environment
Once you have successfully installed your chosen ROM, here's how to keep it running smoothly.