: You can check for official OTA (Over-the-Air) updates by going to Settings > AT&T Software Update > Check for Updates . Ensure you are connected to Wi-Fi for these downloads.
: Go to Settings > About Phone > Software Updates > SD Card Update and select the package. A Note on Custom ROMs & Rooting zte axon m z999 firmware best
, as custom ROM support is virtually non-existent for this niche dual-screen device. Official Stock Firmware : You can check for official OTA (Over-the-Air)
The "Best" custom firmware often lacks full support for the Mode Key (the button that switches between dual-screen and extended modes). Always check the "Known Bugs" section of a ROM thread before flashing. 3. How to Flash Firmware on the Axon M zte axon m z999 firmware best
