The cool thing about repurposing these types of devices is that the hardware is often subsidized through the software. I.e. users 'pay off' the hardware through their software-/in-app/similar purchases. So if you can re-flash them with something custom, you sometimes get hardware at an incredible value.
Now that I think about it, I'm actually not sure if this devices comes with some proprietary software ecosystem; I might be mixing stuff up.
Feel free to send them (part numbers and / or datasheets) to me in direct messages; I might be able to work something out on that front.
The manufacturer(Sipeed) does not have a proprietary ecosystem, but a fork of opensource ecosystems (Micropython + OpenMV). OpenMV does have their own hardware, which probably subsidizes the software development, so unless donate to openMV it could be considered unfair with OpenMV.
The component we're having issues with is AXP173 PMU, you can find more details about the issue in a post I made here:
https://forum.seeedstudio.com/t/maix-amigo-wake-from-sleep-wont-work-in-some-devices-axp173-pmu/273808