== NFC ==
EEnable NFC log
$ adb remount
$ adb pull /system/b2g/omni.ja
$ unzip omni.ja -d Omni
$ vi Omni/moduls/nfc_consts.js
// this.DEBUG_ALL = 'true'
$ cd Omni
$ adb push omni.ja /system/b2g
$ adb reboot
$ adb root
$ adb shell stop b2g
$ adb remount
// remove the RIL
$ adb shell rm -r /system/b2g/distribution/bundles
= Building Gecko/Gaia =