Flashing the Axon M is not like using Odin for Samsung or MiFlash for Xiaomi. You will need QPST (Qualcomm Product Support Tools) or the older MiFlash (which sometimes recognizes the Z999 chipset).
: Installing custom firmware requires unlocking the bootloader. This can typically be initiated in Developer Options by enabling OEM unlocking and USB debugging , then using ADB commands like fastboot oem unlock . zte axon m z999 firmware best
If you intend to root or install custom ROMs, you must unlock the bootloader. Flashing the Axon M is not like using
The vast majority of ZTE Axon M units in circulation are the model, originally released in the US on AT&T . zte axon m z999 firmware best