Start your LG Optimus 4X HD Android smartphone in Safe / APX Mode. The safe mode will allow you to access the device if a setting or software has caused an issue or testing out new configuration parameter settings, and so on. APX Mode allows you to write any partition, so if you brick the tablet it is possible to resuscitate it. Once that is done you will normally just use fastboot to flash the recovery.
LG Optimus 4X HD APX / Battery / Safe Mode:
- Safe Mode is started by holding “Vol +” and “power” button at the same time at startup.(adb shell is enabled, nothing is running(single user mode?)
FIRMWARE Upgrade Mode:
- Firmware update mode is started by holding “Vol –” with USB cable connected at power-on.
- APX mode is started by holding “Vol +” and “Vol –” at the same time at “Power” up(when pressing power).
- Turn off mobile. attach USB cable to pc and mobile. turn on mobile.
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