It is a pity that with all the interesting devices that have been left without updates, manufacturers do not release firmwares in a more organised way so that they can be used again, even if only in a limited way. I'm talking about devices such as the Vadem Clio, Nokia 770, blackberry playbook, several minipcs with windowsce, etc...

I imagine it's such a small niche that it's not worth spending time developing and adapting.