Wrong COM port assignment or improper pin contact beneath the battery.

These files often come in different formats, such as .fls (commonly used by the "Dejan" flasher) or as separate MCU/PPM files used by tools like "Knok".

This is the fundamental operating system core. It contains the essential machine code needed for the hardware to boot, handle radio signals, and manage the UI.

To help me tailor any specific technical assistance, tell me: What is the phone showing? What flashing box or hardware cable do you have access to? Which operating system are you running on your computer? Share public link