Do they comply with the GPL? If so, custom firmware seems like a real possibility!
AFAICT, they don't have a custom kernel, it just runs an application on startup.
Qt for devices is commercial only, not GPL.
My question has nothing to do with Qt.. GP said it was using Linux, and the kernel is GPL.. so.. are they compliant? Are they releasing any/all modifications they are making to the kernel for booting it on their device?
GPL requires you to supply sources together with binaries. Is he distributing binaries to anyone?