I was trying the wrong build method For the correct build method, see README in bq. https://github.com/bq/aquaris-5HD#version-2x-kitkat not wrong? lenovo_b6000-b8000_open_source_code_test Removed ./external/eclipse-basebuilder/src/eclipse-sourceBuild-srcIncluded-3.6.2.zip too big! use instead: https://github.com/akku1139/lenovo_b6000-b8000_open_source_code/blob/main/external/eclipse-basebuilder/src/eclipse-sourceBuild-srcIncluded-3.6.2.zip