: While originally provided by HTC, this version is now commonly hosted on community sites like XDA Forums Android File Host Step-by-Step Update Process Preparation : Back up all data, as the RUU will erase everything. Enable Debugging : On the phone, navigate to Settings > Applications > Development and enable USB Debugging Connection

| Error Code | Message | Cause | Solution | | :--- | :--- | :--- | :--- | | | Connection Error | USB disconnect or ActiveSync not running | Reinstall Windows Mobile Device Center. Re-enter bootloader mode. | | Error 262 | Update Error | Communication interruption during flash | Do not close the utility. Hard reset phone (Volume Up+Down+Reset) and restart RUU. | | Error 270 | Image Error | Corrupt ROM file or wrong device model | Re-download the ROM. Verify it matches your CID (Carrier ID). | | Error 294 | Invalid Vender ID | Your phone is SIM-locked to a carrier | You must run Hard-SPL first to unlock the CID. | Htc Pda Phone Rom Update Utility 3.27.4.3 Free Download