The radio emits a continuous low-pitched "error" beep upon powering up.
Writing a codeplug from a newer version of CPS (Customer Programming Software) to an older firmware version. hytera flashburn fix
Hold the P1 and P3 buttons (usually) while powering on. The radio emits a continuous low-pitched "error" beep
Never flash a portable on a low battery. Always use a fully charged battery or a battery eliminator connected to a stable power supply. hytera flashburn fix