ZTE never officially released Oreo for the Axon M, but a leaked beta exists. It is buggy, but if you need newer security patches (2018 vs 2017), this is your only stock option.
: Due to the Axon M's specialized dual-screen software, there is very little custom ROM development (like LineageOS) compared to standard phones. zte axon m z999 firmware best
The second screen becomes a useless black slab. This is a one-screen phone after flashing. ZTE never officially released Oreo for the Axon
The official stock firmware is recommended if you want the dual-screen features to work perfectly without bugs. zte axon m z999 firmware best