You can disable AAPT compression for given file types through the aaptOptions block in the android block of your build script:
android { ... aaptOptions { noCompress 'png' } }
Having said that, it is unlikely that disabling asset compression will solve your problem; the assembly system in most cases should be able to create a compatible application without resorting to secret parameters. If disabling compression does not help, you can change your question or ask a new one.
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