./mk xxxxxxxxxxxx otapackage
source build/envsetup.sh 启动编译脚本
lunch xxxxxxxxxxxx
ota 升级打包 (项目有特制签名看着改)
./build/tools/releasetools/ota_from_target_files -k device/mediatek/security/releasekey -i a1.zip a2.zip update_8023.zip
./build/tools/releasetools/ota_from_target_files -k device/mediatek/security/testkey -i a1.zip a2.zip update_test.zip
./build/tools/releasetools/ota_from_target_files -i a1.zip a2.zip update.zip