Unofficial firmware apps to official firmware

is there any way to transform apps like these apps to apps for the official firmware (.FAP files)
doom.zip (8.6 MB)

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Sadly no, the FAP files are built against a specific API version, and unofficial fork authors have decided to do their own thing with API versioning and included features, breaking compatibility.

Apps are only compatible from the 2 major non-official firmware branches (one to the otrher) but are not compatible with official and you can’t use apps compiled for official firmware on the non-official as well because of what was already explained by @Astra.

dang it thanks