Entonces, ese es el problema. Intenté buscar en google pero sin suerte, las únicas respuestas fueron boot.img, y esas no son las mismas. updater-script:
assert(package_extract_file("boot.img", "/tmp/boot.img"),
write_raw_image("/tmp/boot.img", "boot"),
delete("/tmp/boot.img"));
set_oemsbl_size(494552);
assert(package_extract_file("oemsbl.mbn", "/tmp/oemsbl2.img"),
write_raw_image("/tmp/oemsbl2.img", "oemsbl2"),
delete("/tmp/oemsbl2.img"));
assert(package_extract_file("amss.mbn", "/tmp/amss.img"),
write_raw_image("/tmp/amss.img", "amss"),
delete("/tmp/amss.img"));
assert(package_extract_file("splash.img", "/tmp/splash.img"),
write_raw_image("/tmp/splash.img", "splash"),
delete("/tmp/splash.img"));
set_appsbl_size(66328);
assert(package_extract_file("appsboot.mbn", "/tmp/appsbl.img"),
write_raw_image("/tmp/appsbl.img", "appsbl"),
delete("/tmp/appsbl.img"));