All stock firmware distributed by us is safe for your PC, tablet, and phone. If your antivirus program detects any file downloaded from here to be virus-infected, please click here to report the file to us. Do not forget to indicate the download link or link to this page.
If you download the OTA update package (update.zip firmware), be aware that it might not successfully flash on a rooted phone. On some devices, if it successfully flashes, the device will be soft-bricked. Some devices though will boot just fine after the update.