Originally Posted by Randy11
Take a Onyx M92, not a Icarus. Yes, it's the same hardware, but the standard M92 has a firmware which progress very well. It's possible that an Icarus can't use the last firmware available.
Is there any reason to suppose that the firmware wouldn't be interchangeable? On earlier Onyx models that were rebranded by other retailerss (eg the Onyx Boox 60, which was also sold by BeBook as the BeBook Neo) you could install whichever firmware appealed to you.