Yamaha CRW2100EZ to CRW2200EZ?
Can I update CRW2100EZ to CRW2200EZ by only updating the firmware?

You'll only cause yourself problems, though thier utility should prevent you from doing so, unless you forced it using the DOS version..... But you'll only cause yourself to need to reflash the proper firmware at best. At worst, it will overwrite essential data, and you'll need to send the drive in to be recalibrated

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