Most stock firmware .tar (Samsung) or .kdz (LG) files contain the flash loader hidden inside. Extract the firmware using tools like unyaffs or Firmware Extractor to find files named MPRG***.hex or loader.hex .
Avoid third-party "download manager" sites that bundle adware, spyware, or require suspicious survey completions. Stick to trusted sources. qualcomm flash loader v10 top download