which OEM version are you using on the MC21x0 you're testing?
you can find a description on where to find this information in MC21x0 user guide (page x):
Tap Start > Settings > Control Panel > System Info icon > System tab.
With this information, if cannot fix it with the latests version of the OS available on our support website:
available for three months after HW purchase or with a maintenance contract.
If the latest OS does not solve the issue, you should contact our Support through the distributors that sold you the device.
the OEM version is 04.34.0121, and I've updated it to 04.34.0122 as per you instructions, but problem persists.
I'll inform our distributor.