For simple software initialization and official emergency recovery.
If you are running a repair business, purchasing an authentic Z3X Box or Octoplus Dongle is the only way to ensure access to the full 2G/3G/4G/5G repair library and technical support.
Modifying mobile device software can void warranties and, in some regions, may be subject to legal restrictions regarding IMEI repair or network unlocking. Always use official software to ensure device safety.