通过命令：
/build/tools/releasetools/ota_from_target_files.py --block -k ./device/mediatek/common/security/releasekey -s ./device/mediatek/build/releasetools/mt_ota_from_target_files.py -i A.zip B.zip update.zip
其中A.zip 和 B.zip是out生成的target包
目录如下：
\out\target\product\d3759_32\obj\PACKAGING\target_files_intermediates
![与专家面对面：Android开发入门问与答[图]](data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACwAAAAAAQABAAACAkQBADs=)