Before a flashing tool can modify a phone's software, it must upload a small piece of code to the phone's temporary memory (RAM). This code is called the (also known as a Download Agent, Authentication File, or Firehose Programmer depending on the chipset).
Open the flash_all.bat or similar script file in your ROM folder with Notepad. writing flash programmer... fail unlock tool
Physical Connection Problems: Poor quality USB cables or unstable USB ports can cause data packets to drop. Even a slight momentary disconnect during the "Writing Programmer" phase will trigger the error. Before a flashing tool can modify a phone's
JLinkExe -device STM32F103C8 -if SWD -speed 4000 -autoconnect 1 > unlock Kinetis # Even for STM32, this triggers a mass erase > erase > exit unlock Kinetis # Even for STM32