Controller never released inhibit bit(s)

This should be stable up to my knowledge but can probably change if device tree or drivers change so stable-ish.

Updates do not update firmware, only software on mmc. Firmware is stored on nor memory on board and can be updated voluntarily with nor-update but even that only updates it to version we consider stable. It can also update it to development version (latest build shipped with system) but that version is not tested and advice is to not use it.

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