When the SETool2 Lite(or any non official patching tool) breaks into DB2010 phones, it overwrites the first few flash blocks of the MAIN firmware. The rest or restore file is used to restore the damaged part of MAIN.
That rest file should be in [SETool folder]\rest\ folder. Anyway, it is in attachment. Unpack it and copy it to [SETool folder]\rest\ folder. After that, reflash the MAIN firmware, and try again.