In the world of mobile repair and "flashing," these files are used to restore a phone to its factory settings, fix software "bricks" (where the phone won't turn on), or remove screen locks. Possible Content
Turn off the phone and connect it to the PC (sometimes while holding a volume button) to begin the update. BLU.1306720WRZ.rar
While I cannot peek inside the archive, files with this naming convention typically include: In the world of mobile repair and "flashing,"
A text file that tells the flashing tool (like SP Flash Tool) where to install each part of the software. BLU.1306720WRZ.rar