Re: Your device has been modified. Software updates are not available...
Hi, I've had that same problem, the only remedy is to remember all the apps that has been installed on the device prior to having the "device modified" and uninstall them or:
Power down your device,
Power it back on with the volume key pressed down,
your device will boot in safe mode,
check the update and it will show the status as normal,
reboot the device again and the status will be back to modified.
Well at least you wouldn't have to uninstall the apps or even hard reset the device.
That's what I did, and it does the job for now.
Cheers