4.x firmware for the n300 and USB150

Thank you for your kind words. But this is not the same as the SF1200.
The SF1200 is being sold by a third party, but the USB150 is indeed something we mistakenly stocked.

We consulted with Amazon and there seems to be no way to recall these sold devices ......
So you're right, they should get a security upgrade. It will get a version that fixes the security vulnerability, which should be 3.218 or 3.219.

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