I read that others also have flashed 2.60 FW of 3490 to 37xx by making some gymnastics with the hwid and name of the rgn:

[Only registered and activated users can see links. ]

[Only registered and activated users can see links. ]

But it doesn't look very safe to me. I see that they are using also the original boot of 34xx FW.

Alex, think you are the only one who can answer, is that safe? Is it so simple? Think you can understand my idea why am I asking. Have a feeling that this method is going to multiply over the internet in the near future and many device are going to burn.

Cheers,
DD