Yours is an old device by these boxes standards and possibly that means it was released before the introduction of dtb,s. If thats the case then it could never work and you would need to find a packaged version of Libreelec which was designed specifically for your box. Its a lot more involved a process and requires more work on your part assuming you can find such a version.
But it bares repeating this feature is not advertised, not recommended and not supported. If you can’t get your box back its your own responsibility. Removing it for everyone else who can handle it would be unfair, and your complaints are likely to end in it been removed from us which would be a shame to say the least.
Shoog