Is the phone still bootable?
If yes, install the OTA downgrade package that provided in NTool support before flashing.
Rename it to ND1-9999-0-00WW-B01-update.zip , place it to root directory of internal storage and dial *#*#874#*#*.
When the phone displays Android robot lying, you can now flash the phone with NTool, but don't flash anything newer than 558D or 563B. |