If you are trying to flash a secured/newer device, the default DA_SW.bin might fail. In SP Flash Tool, click next to Download Agent.
Completely switch off the phone before connecting. If the battery is removable, take it out and put it back in. Some devices require holding a "Boot Key" (usually Volume Down sp+flash+tool+error+1042+verified
translates to: "The authentication token sent by the Preloader to the SP Flash Tool’s DA is invalid or the signature verification has failed." If you are trying to flash a secured/newer
: The connection speed is too slow for the data being pushed, or the process is taking longer than the tool's internal timer allows. sp+flash+tool+error+1042+verified
Instead of selecting "Download Only" in the SP Flash Tool dropdown menu: