Besides normal booting of an android device, there are two more systems maintenance mode. The bootloader or fastboot mode and the recovery mode. We can get into both the modes via startup key combinations or by using adb commands.
You shall find it useful in-case you have rooted your phone or want to refresh the OS or have a different android installed, such as ColorOS/Cyanogenmod/ OxygenOS or any other. In this post, you shall find the step by step process to restore the latest Factory image(Cyngn) to your OnePlus One Phone. This will allow you to install Cyngn/Cyanogen… Continue reading How to Restoring OnePlus one to factory image (Cyngn)/OPO to 100% Stock