Go back to the main settings, tap on 'system', and then 'advanced'. The developer options will then be visible near the bottom. YouTube·HardReset.Info
: Since this device often uses an MTK (MediaTek) chipset, you will need the SP Flash Tool to apply new firmware versions . Firmware ZTE Blade A51
Se notate che un aggiornamento ha installato app indesiderate: Go back to the main settings, tap on
If your phone is stuck in a boot loop or you need to downgrade, you must manually flash the official stock firmware. : The ZTE Blade A51 Se notate che un aggiornamento ha installato app
Use this if you have downloaded a specific firmware package (usually update.zip ) from the ZTE Support site .
: You can enable automatic updates by activating Developer Options (tap "Build Number" in About Phone seven times) and toggling Automatic system updates under the Developer menu.