Possible to add an option to revert to a previous firmware version

So, the only thing the latest printer firmwares on the MFC-L3770CDW's seem to do is lock out more and more non-Brother branded toner cartridges (Brother wants to sell you hugely marked up toner cartridges). It would be nice to be able to

Steam Support :: Steam Controller BLE

Can firmware updates be reversed? - Quora

Introduce maturity firmware levels, FortiGate / FortiOS 7.2.0

8.4.1 Downgrade/Reflash the Firmware using OTAU

Using checkpoints

Upgrading and installation - RouterOS - MikroTik Documentation

How to Downgrade iOS: 13 Steps (with Pictures) - wikiHow

BIOS Basics: How to Configure Your PC's Firmware for First Use

mcu:'mcu' unable to connect : r/klippers

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How to downgrade your Samsung Phone to older firmware, Get Network Band Selection

Restore an iPhone, iPad, or iPod touch that needs a newer version of iOS or iPadOS - Apple Support