Now, while that should be enough to make any root, S-OFF method, or RUU install happy, we’ll go a couple of extra steps to make sure there’s no way the application can accidentally run in the first place. On the first page, you’re presented with a checkbox that says “Open HTC Sync Manager when a phone is connected.” Uncheck that.

In the S-OFF and firmware update arena, that level of bad could mean a phone that no longer works. You can disable HTC Sync Manager on your computer and re-enable it later without losing and data, though. If you start talking to the phone while one of these is attempting to delete the phone’s software or exploit a vulnerability to reach the desired goal, chances are something is going to happen that’s bad. Most S-OFF and RUU updates reboot the phone several times in order to achieve the configuration you’re going for.

The problem here is that HTC Sync Manager will connect and attempt to talk to the phone when it sees it’s connected. Uninstall the Applications Completely in Mac Why would I disable HTC Sync Manager?

Htc one sync manager update