Supposedly, the upper model of this, the one which supports lightscribe is better, but with all the other feature is the same. so would it be possible to crossflash it to this model?

If you’re referring to the 16H5S, you will NOT be able to use lightscribe because the 1635S does NOT have the hardware to do so. But I imagine you can flash to the 16H5S’ firmware and try it out its strategies. Don’t even try to flash a '6S" firmware.

thanks, i noe u can’t use lightscribe on the 1635s even if u upgraded, but because the review showed the 16H5S is better…i was wondering if anyone has crossflashed their 1635s to this version, and how it has performed…