Enviroment
Create your first app in android studio
How to sign app
How to apply app certificate
How to install app to POS
How to update firmware
How to print other country character that not supported
How to reset factory data
How to get log from terminal
=== Set APN === Modify password of Administrator Login === Silence install/uninstall/update app、reboot device === Location developping === Take photo deveopping === Simulate display of pinpad === Load KEK === Update time === Accept parameter file from TMS downloading === Bluetooth print developping === Get brand/manufacturer/product model